ASTROSAT CZTI

Data Quality Report

Orbit 20220118_T04_093T01_9000004872_level2

Creation date: 2022-01-19T18:57:59.526879
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/AS1T04_093T01_9000004872cztM0_level2_bc.evt modeM0/AS1T04_093T01_9000004872cztM0_level2_quad_clean.evt
Size (bytes)1,136,528,640266,158,080
Size1.1 GB 253.8 MB
Events in quadrant A4,428,8661,698,388
Events in quadrant B8,389,8801,657,086
Events in quadrant C8,985,2641,620,043
Events in quadrant D11,133,7861,589,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0438900
B0605230
C0594280
D0666190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04420
B04420
C04420
D04420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21728290.133468%
B2172716007.364109%
C2172812045.541237%
D217288633.971834%

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 27458 21730 0 0 0.00% 0.00%
B 27458 21727 35 35 0.13% 0.16%
C 27458 21727 225 225 0.82% 1.04%
D 27458 21723 76 76 0.28% 0.35%

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 6 58334 233.5 1101 1081 245.2
A 10 83 52221 208.57 1101 1081 245.2
A 15 169 46764 186.31 1101 1081 245.2
B 5 172 3200904 14782.59 1072 1048 216.5
B 0 189 273395 1258.18 1072 1048 216.5
B 0 219 155237 712.32 1072 1048 216.5
C 0 10 1863962 7853.14 1041 1033 237.2
C 14 254 1586084 6681.75 1041 1033 237.2
C 15 214 871218 3668.25 1041 1033 237.2
D 8 195 4130403 14923.88 1053 1021 276.7
D 13 249 749899 2706.5 1053 1021 276.7
D 7 223 580625 2094.73 1053 1021 276.7

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