ASTROSAT CZTI

Data Quality Report

Orbit 56386

Creation date: 2026-03-01T04:47:47.187917
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_56386cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56386cztM0_level2_quad_clean.evt
Size (bytes)1,070,184,96062,542,080
Size1020.6 MB 59.6 MB
Events in quadrant A12,735,396277,280
Events in quadrant B7,793,215475,899
Events in quadrant C3,243,651575,068
Events in quadrant D15,339,029110,209

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421611
B0277311
C0146341
D0500891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6518385759.174593%
B6519200930.817610%
C65191051.610676%
D6519542583.218285%

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 7418 6519 3769 3769 50.81% 57.82%
B 7419 6520 1332 1332 17.95% 20.43%
C 7419 6520 83 83 1.12% 1.27%
D 7419 6519 4794 4794 64.62% 73.54%

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 5627863 48734.23 460 450 115.5
A 3 79 3161412 27374.4 460 450 115.5
A 4 95 726613 6288.68 460 450 115.5
B 4 206 4869127 39714.64 565 544 122.6
B 5 172 318853 2596.55 565 544 122.6
B 8 128 93896 761.5 565 544 122.6
C 15 230 219358 1212.1 654 647 180.4
C 12 249 157583 869.74 654 647 180.4
C 6 223 144081 794.91 654 647 180.4
D 8 129 13451463 143611.84 325 310 93.7
D 2 249 251234 2679.0 325 310 93.7
D 8 160 86446 919.63 325 310 93.7

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