ASTROSAT CZTI

Data Quality Report

Orbit 19124

Creation date: 2024-06-27T17:59:19.814060
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/AS1A05_046T01_9000002838_19124cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19124cztM0_level2_quad_clean.evt
Size (bytes)553,020,480105,606,720
Size527.4 MB 100.7 MB
Events in quadrant A3,532,927672,578
Events in quadrant B4,377,274691,096
Events in quadrant C3,654,527672,732
Events in quadrant D4,671,068636,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155198
B0181716
C01557812
D0191364

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7547991.311780%
B75492152.848059%
C75461121.484230%
D75493785.007286%

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 8090 7551 1 1 0.01% 0.01%
B 8091 7552 61 61 0.75% 0.81%
C 8090 7551 0 0 0.00% 0.00%
D 8090 7551 217 217 2.68% 2.87%

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 9 143 22048 113.79 911 891 185.9
A 0 226 7973 38.09 911 891 185.9
A 13 254 7962 38.03 911 891 185.9
B 10 245 323058 1821.55 909 881 176.9
B 6 36 230155 1296.29 909 881 176.9
B 7 220 157713 886.71 909 881 176.9
C 14 238 136864 647.11 887 894 210.1
C 3 233 56593 265.08 887 894 210.1
C 13 61 6203 25.27 887 894 210.1
D 11 176 568272 2620.04 882 856 216.6
D 1 52 533456 2459.28 882 856 216.6
D 7 238 110601 506.75 882 856 216.6

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