ASTROSAT CZTI

Data Quality Report

Orbit 06868

Creation date: 2024-06-27T15:12:33.594353
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/AS1A02_005T01_9000000948_06868cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06868cztM0_level2_quad_clean.evt
Size (bytes)590,253,120124,715,520
Size562.9 MB 118.9 MB
Events in quadrant A4,160,899785,767
Events in quadrant B4,349,353800,430
Events in quadrant C4,312,799789,826
Events in quadrant D4,422,034756,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190933
B0195132
C0191672
D0198632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9285650.700054%
B9285981.055466%
C9285740.796984%
D9285660.710824%

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 10020 9288 0 0 0.00% 0.00%
B 10020 9288 1 1 0.01% 0.01%
C 10020 9288 2 2 0.02% 0.02%
D 10020 9288 33 33 0.33% 0.36%

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 13 248 14653 61.65 1074 1050 220.6
A 0 226 10135 41.18 1074 1050 220.6
A 12 194 9948 40.33 1074 1050 220.6
B 4 48 77414 366.53 1086 1059 208.3
B 0 187 27414 126.51 1086 1059 208.3
B 12 111 21845 99.78 1086 1059 208.3
C 9 247 215620 884.43 1042 1048 242.6
C 8 128 9301 34.02 1042 1048 242.6
C 12 4 8852 32.17 1042 1048 242.6
D 13 169 209809 816.92 1039 1006 255.6
D 8 195 109745 425.43 1039 1006 255.6
D 2 152 83583 323.07 1039 1006 255.6

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