ASTROSAT CZTI

Data Quality Report

Orbit 56479

Creation date: 2026-03-07T09:45:38.002057
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_060T01_9000006556_56479cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56479cztM0_level2_quad_clean.evt
Size (bytes)540,584,64073,895,040
Size515.5 MB 70.5 MB
Events in quadrant A8,118,166391,911
Events in quadrant B3,196,781548,683
Events in quadrant C3,223,974469,916
Events in quadrant D5,007,595409,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281451
B0133961
C0139111
D0189421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5972183830.776959%
B59721662.779638%
C59732033.398627%
D597363610.647916%

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 7380 6256 1578 1578 21.38% 25.22%
B 7380 6256 70 70 0.95% 1.12%
C 7381 6242 142 142 1.92% 2.27%
D 7381 6257 559 559 7.57% 8.93%

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 1878543 13495.14 561 548 139.2
A 12 3 1868325 13421.71 561 548 139.2
A 4 95 1162118 8346.96 561 548 139.2
B 5 172 417652 3011.78 649 623 138.5
B 0 63 93333 669.55 649 623 138.5
B 0 213 38209 271.45 649 623 138.5
C 12 249 330746 1906.09 632 626 173.2
C 11 227 198587 1143.01 632 626 173.2
C 12 252 97464 559.14 632 626 173.2
D 12 4 1532847 9042.76 602 576 169.4
D 2 249 750828 4427.64 602 576 169.4
D 3 12 116873 686.33 602 576 169.4

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