ASTROSAT CZTI

Data Quality Report

Orbit 35123

Creation date: 2022-03-28T20:19:25.511569
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_047T09_9000005028_35123cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35123cztM0_level2_quad_clean.evt
Size (bytes)657,938,88064,293,120
Size627.5 MB 61.3 MB
Events in quadrant A6,317,681333,268
Events in quadrant B3,337,278409,714
Events in quadrant C3,272,888409,420
Events in quadrant D6,589,258371,005

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228053
B0138812
C0132822
D0238062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6054115819.127849%
B6054981.618764%
C6054350.578130%
D60545719.431781%

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 7336 6055 863 863 11.76% 14.25%
B 7336 6055 43 43 0.59% 0.71%
C 7336 6055 21 21 0.29% 0.35%
D 7336 6055 483 483 6.58% 7.98%

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 15 169 3746737 28801.55 639 625 130.1
A 10 83 81029 618.18 639 625 130.1
A 13 6 14939 110.05 639 625 130.1
B 5 172 258310 1887.38 699 682 136.5
B 0 189 128649 937.48 699 682 136.5
B 5 255 75945 551.37 699 682 136.5
C 15 214 256684 1588.13 688 692 161.2
C 0 10 165763 1024.07 688 692 161.2
C 14 67 91161 561.25 688 692 161.2
D 8 195 2675679 16478.31 661 642 162.3
D 2 250 812289 4999.77 661 642 162.3
D 13 249 296570 1822.93 661 642 162.3

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