ASTROSAT CZTI

Data Quality Report

Orbit 59214

Creation date: 2026-09-07T12:10:21.397646
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/AS1T05_271T01_9000006604_59214cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59214cztM0_level2_quad_clean.evt
Size (bytes)791,516,16096,186,240
Size754.8 MB 91.7 MB
Events in quadrant A3,737,203755,759
Events in quadrant B3,602,117813,279
Events in quadrant C4,902,873693,615
Events in quadrant D16,450,824108,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168162
B0165112
C0202252
D0542982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7787871.117247%
B7787961.232824%
C77864495.766761%
D7786679887.310557%

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 7802 7788 47 47 0.60% 0.60%
B 7802 7788 8 8 0.10% 0.10%
C 7801 7787 387 387 4.96% 4.97%
D 7800 7786 5269 5269 67.55% 67.67%

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 10 251 120009 565.92 864 840 210.6
A 14 238 98380 463.2 864 840 210.6
A 0 24 76593 359.74 864 840 210.6
B 4 236 95722 517.94 861 827 183.2
B 12 111 23788 125.32 861 827 183.2
B 11 111 21908 115.06 861 827 183.2
C 15 147 894512 3925.7 830 826 227.7
C 6 223 295470 1294.28 830 826 227.7
C 14 254 255314 1117.89 830 826 227.7
D 12 110 13809165 88054.91 553 529 156.8
D 8 240 201619 1282.31 553 529 156.8
D 11 129 137030 870.44 553 529 156.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct