ASTROSAT CZTI

Data Quality Report

Orbit 34653

Creation date: 2022-02-24T12:49:43.864469
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/AS1T05_008T01_9000004956_34653cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34653cztM0_level2_quad_clean.evt
Size (bytes)434,689,92068,011,200
Size414.6 MB 64.9 MB
Events in quadrant A2,555,082439,319
Events in quadrant B2,944,966440,335
Events in quadrant C2,761,617427,429
Events in quadrant D4,564,347402,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103102
B0116671
C0108511
D0171681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500010.020000%
B5000541.080000%
C5000390.780000%
D5000901.800000%

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 7033 5001 0 0 0.00% 0.00%
B 7033 5001 35 35 0.50% 0.70%
C 7033 5001 31 31 0.44% 0.62%
D 7033 5001 61 61 0.87% 1.22%

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 31102 239.51 643 631 127.2
A 13 6 25795 197.8 643 631 127.2
A 9 143 11768 87.54 643 631 127.2
B 5 172 388391 3269.52 629 616 118.6
B 4 232 21283 174.25 629 616 118.6
B 5 255 20607 168.55 629 616 118.6
C 15 214 214114 1524.91 607 610 140.0
C 0 10 121277 861.84 607 610 140.0
C 14 67 47416 334.3 607 610 140.0
D 8 195 1797062 11872.26 613 594 151.3
D 14 52 59703 390.63 613 594 151.3
D 2 250 49415 322.64 613 594 151.3

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