ASTROSAT CZTI

Data Quality Report

Orbit 06764

Creation date: 2024-06-27T15:11:25.861791
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_006T01_9000000934_06764cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06764cztM0_level2_quad_clean.evt
Size (bytes)631,172,16095,875,200
Size601.9 MB 91.4 MB
Events in quadrant A3,685,640602,321
Events in quadrant B3,797,003607,376
Events in quadrant C3,588,743595,430
Events in quadrant D7,499,753540,096

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167133
B0168522
C0166372
D0278492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8020931.159601%
B80201451.807980%
C80201011.259352%
D80207108.852868%

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 8560 8022 1 1 0.01% 0.01%
B 8560 8022 3 3 0.04% 0.04%
C 8560 8022 0 0 0.00% 0.00%
D 8560 8022 365 365 4.26% 4.55%

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 8 15 37393 187.78 934 911 194.3
A 15 239 36554 183.46 934 911 194.3
A 13 248 17622 86.01 934 911 194.3
B 4 48 53815 286.55 947 921 184.6
B 0 214 25558 133.47 947 921 184.6
B 0 187 23439 121.99 947 921 184.6
C 13 61 7271 29.59 915 918 214.7
C 8 128 5876 23.09 915 918 214.7
C 10 22 4115 14.89 915 918 214.7
D 12 220 2909149 13516.14 877 850 215.2
D 8 195 563898 2616.73 877 850 215.2
D 13 169 228011 1055.72 877 850 215.2

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