ASTROSAT CZTI

Data Quality Report

Orbit 11804

Creation date: 2024-06-27T16:18:30.261679
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_058T09_9000001744_11804cztM0_level2.evt modeM0/AS1G08_058T09_9000001744_11804cztM0_level2_quad_clean.evt
Size (bytes)647,864,640106,672,320
Size617.9 MB 101.7 MB
Events in quadrant A4,103,158676,829
Events in quadrant B6,387,070652,205
Events in quadrant C3,673,129688,717
Events in quadrant D4,910,383651,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172902
B0243312
C0166282
D0196962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80732042.526942%
B80736017.444568%
C8073971.201536%
D80732593.208225%

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 8804 8076 5 5 0.06% 0.06%
B 8804 8076 321 321 3.65% 3.97%
C 8804 8076 0 0 0.00% 0.00%
D 8804 8076 146 146 1.66% 1.81%

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 1 162 135207 671.82 967 944 199.9
A 1 178 72206 356.58 967 944 199.9
A 1 161 62694 308.98 967 944 199.9
B 4 239 941146 5168.01 945 917 181.9
B 15 185 806522 4428.04 945 917 181.9
B 3 64 594026 3260.05 945 917 181.9
C 13 61 6892 27.31 940 945 217.8
C 1 3 4179 14.85 940 945 217.8
C 12 4 3605 12.21 940 945 217.8
D 1 52 359811 1579.09 938 912 227.3
D 13 249 335213 1470.86 938 912 227.3
D 2 136 213263 934.31 938 912 227.3

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