ASTROSAT CZTI

Data Quality Report

Orbit 45462

Creation date: 2024-06-27T23:12:35.302527
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/AS1A13_038T04_9000006090_45462cztM0_level2.fits modeM0/AS1A13_038T04_9000006090_45462cztM0_level2_quad_clean.evt
Size (bytes)529,153,920108,953,280
Size504.6 MB 103.9 MB
Events in quadrant A5,678,604728,398
Events in quadrant B3,779,291754,441
Events in quadrant C3,300,158731,303
Events in quadrant D6,303,544612,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219982
B0161342
C0148942
D0234312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67802393.525074%
B67802653.908555%
C67801382.035398%
D678081111.961652%

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 7605 6781 18 18 0.24% 0.27%
B 7605 6781 119 119 1.56% 1.75%
C 7605 6781 79 79 1.04% 1.17%
D 7605 6781 866 866 11.39% 12.77%

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 10 83 2702338 17412.92 756 740 155.1
A 13 248 39443 249.46 756 740 155.1
A 0 243 9205 54.56 756 740 155.1
B 15 201 542048 3576.57 764 741 151.3
B 0 199 72809 476.17 764 741 151.3
B 3 112 51389 334.65 764 741 151.3
C 14 254 196291 1096.0 752 756 178.4
C 12 2 108158 602.0 752 756 178.4
C 1 3 39181 215.38 752 756 178.4
D 1 52 3067534 16673.63 718 695 183.9
D 13 249 202160 1095.31 718 695 183.9
D 11 241 141062 763.14 718 695 183.9

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