ASTROSAT CZTI

Data Quality Report

Orbit 15568

Creation date: 2024-06-27T17:10:36.532514
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/AS1G08_028T01_9000002306_15568cztM0_level2.evt modeM0/AS1G08_028T01_9000002306_15568cztM0_level2_quad_clean.evt
Size (bytes)165,744,00037,512,000
Size158.1 MB 35.8 MB
Events in quadrant A971,784260,549
Events in quadrant B1,079,019258,811
Events in quadrant C1,645,461230,801
Events in quadrant D1,186,278241,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041821
B044351
C062261
D048181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1978321.617796%
B1978613.083923%
C197832316.329626%
D1978773.892821%

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 1979 1979 0 0 0.00% 0.00%
B 1979 1979 23 23 1.16% 1.16%
C 1979 1979 202 202 10.21% 10.21%
D 1978 1978 58 58 2.93% 2.93%

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 9 143 2612 44.6 251 246 53.0
A 0 226 2305 38.81 251 246 53.0
A 12 194 1938 31.89 251 246 53.0
B 4 142 78700 1581.34 247 240 49.6
B 0 189 7247 141.22 247 240 49.6
B 0 197 6518 126.53 247 240 49.6
C 3 233 734300 13568.83 223 224 54.1
C 14 238 34834 639.74 223 224 54.1
C 14 220 2437 40.91 223 224 54.1
D 15 0 85133 1388.53 243 236 61.1
D 1 52 64633 1053.25 243 236 61.1
D 7 38 50088 815.35 243 236 61.1

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