ASTROSAT CZTI

Data Quality Report

Orbit 07703

Creation date: 2024-06-27T15:22:55.730777
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_155T01_9000001062_07703cztM0_level2.evt modeM0/AS1A02_155T01_9000001062_07703cztM0_level2_quad_clean.evt
Size (bytes)527,333,76076,250,880
Size502.9 MB 72.7 MB
Events in quadrant A3,585,556454,445
Events in quadrant B3,813,324456,218
Events in quadrant C4,268,226444,343
Events in quadrant D3,803,846441,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156383
B0161702
C0176982
D0162882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73501552.108844%
B73502473.360544%
C73502603.537415%
D73501592.163265%

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 7965 7350 1 1 0.01% 0.01%
B 7965 7350 73 73 0.92% 0.99%
C 7965 7350 119 119 1.49% 1.62%
D 7965 7350 30 30 0.38% 0.41%

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 0 23 67482 360.26 907 889 184.8
A 0 226 13069 65.89 907 889 184.8
A 13 164 8366 40.45 907 889 184.8
B 4 239 272205 1552.23 903 883 174.8
B 12 111 18168 98.89 903 883 174.8
B 11 111 14447 77.6 903 883 174.8
C 9 68 812214 3973.79 877 882 204.2
C 10 22 26442 125.19 877 882 204.2
C 13 61 6782 28.9 877 882 204.2
D 2 152 252840 1157.16 886 859 217.8
D 12 233 62477 282.96 886 859 217.8
D 13 105 62357 282.41 886 859 217.8

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