ASTROSAT CZTI

Data Quality Report

Orbit 20210713_A10_053T27_9000004534_level2

Creation date: 2021-07-15T09:03:07.947672
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/AS1A10_053T27_9000004534cztM0_level2_bc.evt modeM0/AS1A10_053T27_9000004534cztM0_level2_quad_clean.evt
Size (bytes)972,927,360242,913,600
Size927.9 MB 231.7 MB
Events in quadrant A4,128,8741,547,977
Events in quadrant B10,409,4481,523,844
Events in quadrant C7,189,0071,438,906
Events in quadrant D6,374,7661,472,062

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416870
B0640300
C0574080
D0481420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199534332.170100%
B1995312086.054227%
C19953203810.214003%
D199534552.280359%

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 21693 19954 0 0 0.00% 0.00%
B 21693 19952 8 8 0.04% 0.04%
C 21693 19950 11 11 0.05% 0.06%
D 21693 19954 12 12 0.06% 0.06%

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 13 254 35544 148.48 1067 1047 232.3
A 0 226 6732 24.47 1067 1047 232.3
A 12 194 6518 23.55 1067 1047 232.3
B 6 159 5376276 26402.62 1045 1018 203.6
B 4 80 416239 2039.52 1045 1018 203.6
B 5 172 281772 1379.03 1045 1018 203.6
C 3 233 3081810 13163.14 983 976 234.1
C 0 10 135411 574.39 983 976 234.1
C 14 254 112532 476.63 983 976 234.1
D 8 195 2049381 8448.8 1052 1015 242.4
D 12 233 115354 471.61 1052 1015 242.4
D 2 234 92329 376.64 1052 1015 242.4

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