ASTROSAT CZTI

Data Quality Report

Orbit 56391

Creation date: 2026-03-01T11:57:25.552728
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_083T05_9000006554_56391cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56391cztM0_level2_quad_clean.evt
Size (bytes)988,413,12067,037,760
Size942.6 MB 63.9 MB
Events in quadrant A13,760,533255,823
Events in quadrant B5,517,053645,539
Events in quadrant C4,370,097587,793
Events in quadrant D12,431,23082,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452402
B0208422
C0176852
D0415022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6568430065.468940%
B656880312.225944%
C65685087.734470%
D6568567686.419001%

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 7683 6569 3966 3966 51.62% 60.37%
B 7683 6569 371 371 4.83% 5.65%
C 7683 6569 304 304 3.96% 4.63%
D 7682 6567 3479 3479 45.29% 52.98%

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 12 3 5079998 42123.9 482 469 120.6
A 3 79 2470366 20482.55 482 469 120.6
A 4 95 2252538 18676.13 482 469 120.6
B 4 206 2159813 14697.49 697 672 146.9
B 5 172 246522 1673.53 697 672 146.9
B 5 185 97129 656.59 697 672 146.9
C 15 230 1178565 6266.36 694 689 188.0
C 13 3 138375 732.49 694 689 188.0
C 12 112 120568 637.76 694 689 188.0
D 8 129 11521066 229600.56 172 164 50.2
D 8 113 117705 2342.48 172 164 50.2
D 7 96 25012 495.2 172 164 50.2

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