ASTROSAT CZTI

Data Quality Report

Orbit 48094

Creation date: 2024-08-20T08:30:12.558969
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/AS1A13_071T07_9000006398_48094cztM0_level2.fits modeM0/AS1A13_071T07_9000006398_48094cztM0_level2_quad_clean.evt
Size (bytes)831,778,560154,638,720
Size793.2 MB 147.5 MB
Events in quadrant A13,267,7861,298,384
Events in quadrant B2,196,970233
Events in quadrant C5,618,0891,333,592
Events in quadrant D8,702,4901,166,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494263
B0135503
C0264163
D0347783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127795494.296111%
B127791277599.968699%
C127801531.197183%
D127807195.625978%

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 14914 12779 28 28 0.19% 0.22%
B 14913 12778 1 1 0.01% 0.01%
C 14915 12780 19 19 0.13% 0.15%
D 14915 12780 479 479 3.21% 3.75%

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 83 7769214 27171.5 1386 1359 285.9
A 14 248 55285 188.63 1386 1359 285.9
A 13 248 42839 145.09 1386 1359 285.9
B 2 177 1764129 86461.93 91 88 20.4
B 4 21 43984 2151.5 91 88 20.4
B 0 200 8761 425.09 91 88 20.4
C 14 254 119478 366.11 1377 1386 322.6
C 12 250 52411 158.19 1377 1386 322.6
C 12 2 29695 87.76 1377 1386 322.6
D 2 165 1527289 4521.66 1356 1312 337.5
D 12 2 725264 2145.16 1356 1312 337.5
D 12 128 269591 794.94 1356 1312 337.5

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