ASTROSAT CZTI

Data Quality Report

Orbit 20200826_A09_038T10_9000003844_level2

Creation date: 2025-12-14T15:01:54.960336
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/AS1A09_038T10_9000003844cztM0_level2.fits modeM0/AS1A09_038T10_9000003844cztM0_level2_quad_clean.evt
Size (bytes)88,027,20099,325,440
Size83.9 MB 94.7 MB
Events in quadrant A564,220665,780
Events in quadrant B529,338646,956
Events in quadrant C540,094642,882
Events in quadrant D362,688383,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200930
B0225930
C0240220
D0508220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9633510.529430%
B96333843.986297%
C96334174.328870%
D9633400741.596595%

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 10268 9633 0 0 0.00% 0.00%
B 10268 9632 0 0 0.00% 0.00%
C 10268 9633 0 0 0.00% 0.00%
D 10268 9444 0 0 0.00% 0.00%

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 0 29 478 8.92 147 138 38.1
A 7 110 428 7.61 147 138 38.1
A 9 19 426 7.55 147 138 38.1
B 2 9 398 8.77 140 134 30.1
B 5 255 374 7.97 140 134 30.1
B 12 226 340 6.84 140 134 30.1
C 1 80 426 7.69 142 134 38.0
C 1 81 417 7.46 142 134 38.0
C 12 241 401 7.03 142 134 38.0
D 4 246 282 6.52 103 94 28.9
D 1 3 269 6.06 103 94 28.9
D 3 14 267 6.0 103 94 28.9

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