ASTROSAT CZTI

Data Quality Report

Orbit 54889

Creation date: 2025-11-20T18:50:50.467002
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_039T06_9000006526_54889cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54889cztM0_level2_quad_clean.evt
Size (bytes)856,327,680185,146,560
Size816.7 MB 176.6 MB
Events in quadrant A6,723,7581,222,548
Events in quadrant B6,300,0841,274,172
Events in quadrant C8,779,8931,117,778
Events in quadrant D8,863,1961,071,443

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02952010
B02905011
C03574919
D0359559

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133061190.894333%
B133073882.915759%
C133037405.562655%
D133074893.674758%

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 15260 13313 14 14 0.09% 0.11%
B 15261 13313 153 153 1.00% 1.15%
C 15261 13311 551 551 3.61% 4.14%
D 15261 13313 458 458 3.00% 3.44%

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 1094763 3117.68 1413 1375 350.7
A 0 8 69122 193.17 1413 1375 350.7
A 13 254 39474 108.64 1413 1375 350.7
B 5 185 606856 2039.31 1383 1330 296.9
B 5 236 67611 223.22 1383 1330 296.9
B 12 111 37088 120.43 1383 1330 296.9
C 4 5 2083579 5688.68 1341 1328 366.0
C 14 254 407183 1108.79 1341 1328 366.0
C 6 223 379284 1032.57 1341 1328 366.0
D 8 160 758970 1962.61 1348 1289 386.1
D 15 94 618659 1599.16 1348 1289 386.1
D 10 181 565417 1461.25 1348 1289 386.1

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