ASTROSAT CZTI

Data Quality Report

Orbit 20260112_A14_099T04_9000006540_level2

Creation date: 2026-02-05T21:56:28.401376
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_099T04_9000006540cztM0_level2.fits modeM0/AS1A14_099T04_9000006540cztM0_level2_quad_clean.evt
Size (bytes)4,240,992,9601,455,632,640
Size3.9 GB 1.4 GB
Events in quadrant A22,683,4721,400,657
Events in quadrant B24,509,4482,437,114
Events in quadrant C24,493,6622,011,378
Events in quadrant D20,006,2361,603,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023380400
B013393340
C015122790
D020462670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06370
B06370
C06370
D06370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108360
B0108360
C0108360
D0108360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53432414109026.405327%
B534316321556.017974%
C534329507629.500139%
D53431110468219.591960%

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 603066 529510 0 0 0.00% 0.00%
B 603067 534004 0 0 0.00% 0.00%
C 603067 528411 0 0 0.00% 0.00%
D 603067 528748 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 14 188 25123 9.87 5950 5476 1990.7
A 9 255 23038 8.82 5950 5476 1990.7
A 14 204 20284 7.44 5950 5476 1990.7
B 2 9 27813 14.4 6456 6094 1508.2
B 2 8 24887 12.46 6456 6094 1508.2
B 3 25 20540 9.58 6456 6094 1508.2
C 2 31 19800 6.12 6529 5920 2266.4
C 7 221 19470 5.98 6529 5920 2266.4
C 15 175 19184 5.85 6529 5920 2266.4
D 6 218 25036 10.32 5705 5050 1936.0
D 15 11 18820 7.11 5705 5050 1936.0
D 8 12 18518 6.96 5705 5050 1936.0

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