ASTROSAT CZTI

Data Quality Report

Orbit 17156

Creation date: 2024-06-27T17:32:56.076991
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/AS1T03_059T01_9000002546_17156cztM0_level2.evt modeM0/AS1T03_059T01_9000002546_17156cztM0_level2_quad_clean.evt
Size (bytes)507,124,80085,616,640
Size483.6 MB 81.7 MB
Events in quadrant A3,446,506529,956
Events in quadrant B3,473,863539,047
Events in quadrant C4,558,078503,155
Events in quadrant D3,381,927510,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151602
B0151362
C0182232
D0152862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7325811.105802%
B73251231.679181%
C73252974.054608%
D7325791.078498%

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 7675 7326 1 1 0.01% 0.01%
B 7675 7326 0 0 0.00% 0.00%
C 7675 7326 62 62 0.81% 0.85%
D 7675 7326 1 1 0.01% 0.01%

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 12 189 30291 161.93 887 867 181.7
A 0 226 7618 37.15 887 867 181.7
A 3 137 6662 31.89 887 867 181.7
B 12 111 21360 117.92 889 865 173.8
B 11 111 18362 100.67 889 865 173.8
B 14 111 16234 88.42 889 865 173.8
C 3 233 857141 4248.73 850 854 201.5
C 4 254 259304 1282.38 850 854 201.5
C 14 238 128645 634.07 850 854 201.5
D 1 52 49278 229.74 866 843 210.8
D 13 232 39766 184.62 866 843 210.8
D 2 234 24772 113.5 866 843 210.8

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