ASTROSAT CZTI

Data Quality Report

Orbit 24797

Creation date: 2024-06-27T19:09:59.215915
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/AS1T03_197T01_9000003626_24797cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24797cztM0_level2_quad_clean.evt
Size (bytes)461,263,68071,608,320
Size439.9 MB 68.3 MB
Events in quadrant A3,317,838437,257
Events in quadrant B3,408,522439,085
Events in quadrant C3,325,585423,024
Events in quadrant D3,477,436417,136

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135151
B0137341
C0135441
D0142471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64781322.037666%
B64791472.268869%
C64791382.129958%
D64791642.531255%

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 7523 6479 0 0 0.00% 0.00%
B 7524 6480 9 9 0.12% 0.14%
C 7524 6480 1 1 0.01% 0.02%
D 7524 6480 62 62 0.82% 0.96%

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 2 79 10612 57.45 856 840 170.1
A 13 254 10525 56.94 856 840 170.1
A 3 137 7563 39.53 856 840 170.1
B 0 189 43033 263.83 840 819 160.0
B 3 64 42928 263.18 840 819 160.0
B 12 111 19444 116.4 840 819 160.0
C 14 238 131613 698.68 806 812 187.2
C 2 16 27112 140.48 806 812 187.2
C 5 112 19998 102.48 806 812 187.2
D 1 52 273801 1388.48 823 800 196.6
D 8 195 52300 261.93 823 800 196.6
D 2 234 25594 126.1 823 800 196.6

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