ASTROSAT CZTI

Data Quality Report

Orbit 57798

Creation date: 2026-06-04T03:09:04.151405
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_083T16_9000006580_57798cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57798cztM0_level2_quad_clean.evt
Size (bytes)746,089,92077,849,280
Size711.5 MB 74.2 MB
Events in quadrant A2,922,661608,552
Events in quadrant B5,122,323622,474
Events in quadrant C12,145,007249,820
Events in quadrant D6,945,198441,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01282
B01282
C01282
D01282

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013359235
B020242643
C041220881
D025492440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244430.688661%
B62253155.060241%
C6215391462.976669%
D6223124620.022497%

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 7339 6258 8 8 0.11% 0.13%
B 7323 6248 160 160 2.18% 2.56%
C 7302 6225 3686 3686 50.48% 59.21%
D 7318 6241 1303 1303 17.81% 20.88%

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 14 208593 1265.93 661 645 164.3
A 3 128 146471 887.75 661 645 164.3
A 3 137 7926 44.32 661 645 164.3
B 4 80 2245480 16463.21 643 621 136.4
B 10 247 101082 736.75 643 621 136.4
B 4 171 56648 410.89 643 621 136.4
C 9 38 8528264 66881.28 469 464 127.5
C 15 224 1474417 11559.82 469 464 127.5
C 10 21 128481 1004.0 469 464 127.5
D 12 0 3582036 21714.85 573 544 164.9
D 8 160 588488 3564.75 573 544 164.9
D 2 249 148857 899.23 573 544 164.9

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