ASTROSAT CZTI

Data Quality Report

Orbit 56904

Creation date: 2026-04-05T00:19:48.121937
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_083T14_9000006564_56904cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56904cztM0_level2_quad_clean.evt
Size (bytes)600,073,92095,558,400
Size572.3 MB 91.1 MB
Events in quadrant A3,948,333641,289
Events in quadrant B4,675,590664,036
Events in quadrant C7,103,459545,826
Events in quadrant D5,929,415543,266

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01462
B01462
C01462
D01464

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017652361
B019166262
C026315305
D023088348

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71533034.235985%
B71665387.507675%
C7166110515.420039%
D715972010.057271%

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 7205 7178 231 231 3.21% 3.22%
B 7224 7179 377 377 5.22% 5.25%
C 7201 7182 933 933 12.96% 12.99%
D 7179 7172 635 635 8.85% 8.85%

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 3 62 741633 4182.99 714 698 177.1
A 4 249 332538 1873.42 714 698 177.1
A 10 251 32480 179.43 714 698 177.1
B 5 172 1344341 9122.57 687 663 147.3
B 8 128 125159 845.23 687 663 147.3
B 5 185 104908 707.75 687 663 147.3
C 12 254 2768899 15148.07 657 649 182.7
C 13 3 975944 5336.89 657 649 182.7
C 1 16 277269 1513.69 657 649 182.7
D 8 240 797277 4175.97 669 638 190.8
D 2 249 725154 3797.9 669 638 190.8
D 3 12 633276 3316.28 669 638 190.8

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