ASTROSAT CZTI

Data Quality Report

Orbit 37076

Creation date: 2024-06-27T21:35:16.365070
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/AS1A09_138T04_9000005282_37076cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37076cztM0_level2_quad_clean.evt
Size (bytes)445,392,00079,977,600
Size424.8 MB 76.3 MB
Events in quadrant A2,846,961523,089
Events in quadrant B3,745,459512,359
Events in quadrant C3,012,835507,418
Events in quadrant D3,504,380488,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118593
B0147172
C0122082
D0141302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5579200.358487%
B55793796.793332%
C5579510.914142%
D5579661.183008%

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 7013 5580 8 8 0.11% 0.14%
B 7013 5580 328 328 4.68% 5.88%
C 7013 5580 41 41 0.58% 0.73%
D 7013 5580 46 46 0.66% 0.82%

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 268461 2032.45 650 635 131.8
A 7 3 36521 272.33 650 635 131.8
A 13 6 16928 123.64 650 635 131.8
B 0 229 885371 7339.18 629 613 120.6
B 5 172 134754 1112.72 629 613 120.6
B 5 200 126779 1046.56 629 613 120.6
C 15 214 235555 1588.24 630 634 147.9
C 0 10 110906 745.52 630 634 147.9
C 1 23 55849 373.3 630 634 147.9
D 1 52 386447 2517.39 629 613 153.3
D 2 249 208066 1353.54 629 613 153.3
D 13 171 142483 925.64 629 613 153.3

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