ASTROSAT CZTI

Data Quality Report

Orbit 20181027_A05_078T01_9000002462_level2

Creation date: 2018-10-29T10:52:12.803763
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/AS1A05_078T01_9000002462cztM0_level2_bc.evt modeM0/AS1A05_078T01_9000002462cztM0_level2_quad_clean.evt
Size (bytes)4,168,526,4001,898,225,280
Size3.9 GB 1.8 GB
Events in quadrant A26,819,35012,792,121
Events in quadrant B26,402,55513,181,021
Events in quadrant C21,538,19712,631,684
Events in quadrant D44,697,59512,060,246

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01710
B01710
C01710
D01710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02349480
B02265570
C02110210
D02906390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020360
B020360
C020360
D020360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9971940994.110551%
B9971917391.743900%
C9971914821.486176%
D9971949774.991025%

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 117005 99716 278 278 0.24% 0.28%
B 117005 99720 33 33 0.03% 0.03%
C 117005 99722 0 0 0.00% 0.00%
D 117005 99719 899 899 0.77% 0.90%

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 15 174 6113891 5484.2 5156 5071 1113.9
A 9 143 546561 486.12 5156 5071 1113.9
A 3 1 276521 243.69 5156 5071 1113.9
B 15 35 1853689 1875.33 5288 5174 985.7
B 0 229 1288942 1302.39 5288 5174 985.7
B 0 189 775018 781.01 5288 5174 985.7
C 3 233 1851449 1563.31 5033 5017 1181.1
C 7 247 253809 210.64 5033 5017 1181.1
C 5 237 53784 41.29 5033 5017 1181.1
D 1 52 15612689 13295.93 5056 4891 1173.9
D 2 16 4128388 3512.71 5056 4891 1173.9
D 15 0 2561652 2178.05 5056 4891 1173.9

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