ASTROSAT CZTI

Data Quality Report

Orbit 27880

Creation date: 2024-06-27T19:45:32.123223
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/AS1A10_024T01_9000004026_27880cztM0_level2.evt modeM0/AS1A10_024T01_9000004026_27880cztM0_level2_quad_clean.evt
Size (bytes)482,019,84098,616,960
Size459.7 MB 94.0 MB
Events in quadrant A3,228,702664,211
Events in quadrant B3,775,511659,526
Events in quadrant C3,249,223621,433
Events in quadrant D3,917,009601,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136150
B0153630
C0135830
D0158140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6297390.619343%
B62971602.540892%
C6297861.365730%
D62971862.953788%

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 7497 6298 1 1 0.01% 0.02%
B 7497 6298 73 73 0.97% 1.16%
C 7497 6298 3 3 0.04% 0.05%
D 7497 6298 167 167 2.23% 2.65%

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 15 174 78005 476.43 808 794 162.1
A 13 248 26699 159.85 808 794 162.1
A 13 254 11612 66.75 808 794 162.1
B 5 172 238858 1585.66 800 783 150.1
B 0 190 160882 1066.31 800 783 150.1
B 0 229 66791 439.64 800 783 150.1
C 3 233 168457 961.2 754 757 174.5
C 14 238 123485 703.43 754 757 174.5
C 0 207 11696 62.7 754 757 174.5
D 1 52 506279 2831.12 755 734 178.6
D 2 250 133101 741.27 755 734 178.6
D 7 69 128940 717.97 755 734 178.6

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