ASTROSAT CZTI

Data Quality Report

Orbit 35212

Creation date: 2022-04-03T08:24:08.776329
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/AS1C07_004T01_9000005052_35212cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35212cztM0_level2_quad_clean.evt
Size (bytes)1,179,642,240112,512,960
Size1.1 GB 107.3 MB
Events in quadrant A5,185,463695,054
Events in quadrant B11,927,409626,890
Events in quadrant C6,071,015699,822
Events in quadrant D11,814,572636,076

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223084
B0429643
C0244343
D0426503

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10809400.370062%
B10809235821.815154%
C108091331.230456%
D108097076.540846%

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 13615 10811 27 27 0.20% 0.25%
B 13615 10811 1533 1533 11.26% 14.18%
C 13615 10811 105 105 0.77% 0.97%
D 13615 10811 714 714 5.24% 6.60%

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 169240 672.34 1250 1228 249.9
A 9 143 104693 414.04 1250 1228 249.9
A 13 6 38247 148.14 1250 1228 249.9
B 5 236 6819006 31462.08 1139 1110 216.7
B 4 232 394534 1815.5 1139 1110 216.7
B 3 112 67493 306.33 1139 1110 216.7
C 15 214 449758 1599.72 1210 1217 280.4
C 0 10 420229 1494.4 1210 1217 280.4
C 12 250 269527 956.93 1210 1217 280.4
D 8 195 5185480 17975.26 1189 1156 288.4
D 5 223 676794 2342.59 1189 1156 288.4
D 13 249 472184 1633.16 1189 1156 288.4

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