ASTROSAT CZTI

Data Quality Report

Orbit 38716

Creation date: 2024-06-27T21:55:30.286368
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/AS1A12_054T01_9000005392_38716cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38716cztM0_level2_quad_clean.evt
Size (bytes)955,713,600169,346,880
Size911.4 MB 161.5 MB
Events in quadrant A6,594,8891,202,143
Events in quadrant B6,516,6951,172,829
Events in quadrant C5,467,9631,161,892
Events in quadrant D15,963,873843,709

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263364
B0265853
C0228693
D0548663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107801551.437848%
B107804604.267161%
C10780400.371058%
D10780305228.311688%

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 13614 10782 85 85 0.62% 0.79%
B 13614 10782 302 302 2.22% 2.80%
C 13614 10782 28 28 0.21% 0.26%
D 13614 10782 2439 2439 17.92% 22.62%

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 716925 2903.88 1217 1191 246.5
A 0 8 712911 2887.6 1217 1191 246.5
A 13 248 360946 1459.6 1217 1191 246.5
B 5 184 1525027 6616.06 1195 1163 230.3
B 0 190 74538 318.57 1195 1163 230.3
B 4 171 64639 275.59 1195 1163 230.3
C 15 214 439217 1576.28 1187 1191 277.9
C 14 254 334022 1197.73 1187 1191 277.9
C 0 10 22877 78.04 1187 1191 277.9
D 2 16 7174448 26849.67 1092 1062 267.2
D 12 235 3483962 13036.34 1092 1062 267.2
D 2 249 331386 1236.39 1092 1062 267.2

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