ASTROSAT CZTI

Data Quality Report

Orbit 20210125_A10_121T01_9000004134_level2

Creation date: 2021-01-28T15:29:03.386120
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_121T01_9000004134cztM0_level2_bc.evt modeM0/AS1A10_121T01_9000004134cztM0_level2_quad_clean.evt
Size (bytes)13,482,296,6403,200,005,440
Size12.6 GB 3.0 GB
Events in quadrant A48,561,09021,692,219
Events in quadrant B52,292,03622,225,804
Events in quadrant C83,304,95320,716,566
Events in quadrant D210,296,78918,281,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04376910
B04568390
C05788430
D09872480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041700
B041700
C041700
D041700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20427236261.775084%
B20427259602.917678%
C204272164688.061800%
D2042725794628.367079%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 235658 204246 174 174 0.07% 0.09%
B 235658 204239 102 102 0.04% 0.05%
C 235658 204224 213 213 0.09% 0.10%
D 235658 204233 24431 24431 10.37% 11.96%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 235 3698919 1530.27 11107 10950 2410.0
A 6 16 563773 229.39 11107 10950 2410.0
A 15 174 400183 161.51 11107 10950 2410.0
B 5 172 4238607 2017.64 11228 11007 2095.3
B 5 255 1630615 772.97 11228 11007 2095.3
B 10 245 954658 450.36 11228 11007 2095.3
C 3 233 37050827 14564.87 10601 10578 2543.1
C 4 254 4062242 1593.18 10601 10578 2543.1
C 14 254 804501 312.18 10601 10578 2543.1
D 8 195 99696024 42804.18 9926 9603 2328.9
D 1 52 52023606 22334.2 9926 9603 2328.9
D 13 104 9251985 3968.57 9926 9603 2328.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter