ASTROSAT CZTI

Data Quality Report

Orbit 48093

Creation date: 2024-08-20T13:12:59.169029
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_48093cztM0_level2.fits modeM0/AS1A13_071T07_9000006398_48093cztM0_level2_quad_clean.evt
Size (bytes)805,777,920139,276,800
Size768.4 MB 132.8 MB
Events in quadrant A11,173,7411,168,510
Events in quadrant B1,943,69374,566
Events in quadrant C4,901,3791,176,841
Events in quadrant D10,914,4051,003,284

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417871
B0120521
C0234211
D0405151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113783973.489190%
B113781137799.991211%
C113791901.669743%
D11379177015.554970%

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 11622 11377 51 51 0.44% 0.45%
B 11622 11377 1 1 0.01% 0.01%
C 11623 11378 16 16 0.14% 0.14%
D 11623 11378 1591 1591 13.69% 13.98%

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 6194616 24539.59 1211 1180 252.4
A 13 248 157137 617.93 1211 1180 252.4
A 14 248 123408 484.29 1211 1180 252.4
B 2 177 1571619 86879.42 79 77 18.1
B 4 21 21294 1172.94 79 77 18.1
B 0 200 14019 770.75 79 77 18.1
C 14 254 131831 462.63 1213 1218 282.3
C 12 250 23914 80.39 1213 1218 282.3
C 13 61 8218 24.79 1213 1218 282.3
D 2 165 5981432 20890.48 1140 1102 286.3
D 11 224 242871 844.55 1140 1102 286.3
D 13 112 91772 316.73 1140 1102 286.3

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