ASTROSAT CZTI

Data Quality Report

Orbit 56027

Creation date: 2026-02-05T01:10:50.285443
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_066T02_9000006546_56027cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56027cztM0_level2_quad_clean.evt
Size (bytes)803,154,24069,652,800
Size765.9 MB 66.4 MB
Events in quadrant A8,344,470450,217
Events in quadrant B3,119,911623,596
Events in quadrant C10,358,954165,924
Events in quadrant D7,438,591447,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289381
B0136481
C0350893
D0262891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6037171228.358456%
B60371452.401855%
C6036437072.398940%
D6036116919.367131%

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 7192 6038 1629 1629 22.65% 26.98%
B 7192 6038 37 37 0.51% 0.61%
C 7190 6032 2461 2461 34.23% 40.80%
D 7191 6037 1088 1088 15.13% 18.02%

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 32 3808456 26037.59 585 573 146.2
A 12 115 2045673 13984.01 585 573 146.2
A 0 8 100187 681.14 585 573 146.2
B 5 185 146033 1053.93 643 620 138.0
B 4 171 119866 864.28 643 620 138.0
B 0 213 77750 559.03 643 620 138.0
C 13 3 9174254 113964.22 286 283 80.5
C 12 252 34507 425.15 286 283 80.5
C 9 38 9102 109.55 286 283 80.5
D 11 129 4180433 24877.02 585 561 168.0
D 6 239 400234 2378.7 585 561 168.0
D 2 62 268065 1592.08 585 561 168.0

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