ASTROSAT CZTI

Data Quality Report

Orbit 21279

Creation date: 2024-06-27T18:25:46.993867
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/AS1A05_037T01_9000003140_21279cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21279cztM0_level2_quad_clean.evt
Size (bytes)502,496,64095,777,280
Size479.2 MB 91.3 MB
Events in quadrant A3,288,519635,357
Events in quadrant B4,237,093610,538
Events in quadrant C3,360,193612,443
Events in quadrant D3,898,249595,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138791
B0168241
C0139891
D0157921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63931101.720632%
B63944617.209884%
C63941472.299030%
D63941412.205192%

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 7623 6393 0 0 0.00% 0.00%
B 7624 6394 304 304 3.99% 4.75%
C 7624 6394 21 21 0.28% 0.33%
D 7624 6394 55 55 0.72% 0.86%

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 9 143 31460 180.96 844 827 169.3
A 13 254 10381 56.44 844 827 169.3
A 0 226 7434 39.03 844 827 169.3
B 10 245 899489 5839.73 812 796 153.9
B 0 245 37729 239.99 812 796 153.9
B 0 190 36552 232.34 812 796 153.9
C 14 238 124999 675.2 793 800 183.9
C 0 207 120057 648.33 793 800 183.9
C 3 233 13647 69.84 793 800 183.9
D 1 52 348193 1762.71 812 789 197.1
D 7 238 152301 768.77 812 789 197.1
D 12 235 115102 580.02 812 789 197.1

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