ASTROSAT CZTI

Data Quality Report

Orbit 54321

Creation date: 2025-10-13T05:41:42.087814
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_126T15_9000006516_54321cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54321cztM0_level2_quad_clean.evt
Size (bytes)1,665,740,160145,874,880
Size1.6 GB 139.1 MB
Events in quadrant A8,869,3441,125,835
Events in quadrant B8,177,6441,210,345
Events in quadrant C19,760,151677,459
Events in quadrant D23,868,428520,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353311
B0335811
C0673985
D0795051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127689527.456140%
B127688866.939223%
C12767533541.787421%
D12767694554.398057%

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 13078 12769 698 698 5.34% 5.47%
B 13078 12769 676 676 5.17% 5.29%
C 13076 12767 4997 4997 38.22% 39.14%
D 13077 12768 6383 6383 48.81% 49.99%

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 29 2008190 6113.7 1320 1290 328.3
A 4 61 636401 1934.76 1320 1290 328.3
A 15 174 209258 633.54 1320 1290 328.3
B 10 245 2078270 7481.51 1296 1248 277.6
B 5 172 319158 1145.12 1296 1248 277.6
B 7 0 186444 667.08 1296 1248 277.6
C 1 241 7922372 29818.41 982 974 265.7
C 12 2 6230458 23449.56 982 974 265.7
C 12 249 604367 2271.34 982 974 265.7
D 8 176 9519825 36734.89 916 874 259.1
D 15 108 4657812 17971.74 916 874 259.1
D 3 12 4149012 16008.21 916 874 259.1

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