ASTROSAT CZTI

Data Quality Report

Orbit 59293

Creation date: 2026-09-12T18:10:20.777230
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/AS1A14_021T06_9000006606_59293cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59293cztM0_level2_quad_clean.evt
Size (bytes)739,258,56081,480,960
Size705.0 MB 77.7 MB
Events in quadrant A3,034,928634,239
Events in quadrant B7,422,467527,188
Events in quadrant C3,572,321591,917
Events in quadrant D12,826,479256,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136081
B0264028
C0154191
D0425841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6551640.976950%
B6551173326.453976%
C65511592.427110%
D6551403261.547855%

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 7441 6551 9 9 0.12% 0.14%
B 7441 6552 1512 1512 20.32% 23.08%
C 7441 6552 109 109 1.46% 1.66%
D 7440 6550 3640 3640 48.92% 55.57%

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 7 64 139422 790.5 712 696 175.5
A 15 233 44797 251.3 712 696 175.5
A 3 14 28742 159.81 712 696 175.5
B 4 236 3835395 29782.06 607 585 128.8
B 5 236 759561 5894.39 607 585 128.8
B 10 247 178648 1382.88 607 585 128.8
C 12 252 584751 3137.54 679 673 186.2
C 3 233 214339 1147.77 679 673 186.2
C 14 254 45274 239.59 679 673 186.2
D 12 110 8793447 57653.49 542 519 152.5
D 11 129 1448178 9492.01 542 519 152.5
D 12 2 162171 1059.92 542 519 152.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct