ASTROSAT CZTI

Data Quality Report

Orbit 58231

Creation date: 2026-07-06T21:15:16.229255
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_044T03_9000006588_58231cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58231cztM0_level2_quad_clean.evt
Size (bytes)1,198,235,520191,378,880
Size1.1 GB 182.5 MB
Events in quadrant A6,627,6281,306,003
Events in quadrant B11,268,8661,318,491
Events in quadrant C6,609,9931,269,539
Events in quadrant D18,756,354924,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299883
B0434953
C0302023
D0653843

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14120990.701133%
B1412110857.683592%
C141211210.856880%
D14121352124.934495%

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 15994 14120 47 47 0.29% 0.33%
B 15995 14121 614 614 3.84% 4.35%
C 15996 14123 95 95 0.59% 0.67%
D 15996 14123 3647 3647 22.80% 25.82%

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 13 248 185183 483.0 1533 1493 380.3
A 3 14 164689 429.11 1533 1493 380.3
A 8 26 146790 382.05 1533 1493 380.3
B 10 128 2212639 7079.83 1473 1418 312.3
B 2 249 1279916 4093.46 1473 1418 312.3
B 8 128 309188 985.41 1473 1418 312.3
C 12 249 266599 647.24 1493 1479 409.6
C 6 223 216046 523.83 1493 1479 409.6
C 12 252 174910 423.4 1493 1479 409.6
D 12 110 10409825 27290.23 1348 1290 381.4
D 8 240 583791 1527.26 1348 1290 381.4
D 6 239 490988 1283.94 1348 1290 381.4

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