ASTROSAT CZTI

Data Quality Report

Orbit 40127

Creation date: 2024-06-27T22:12:38.674943
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/AS1A12_004T01_9000005520_40127cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40127cztM0_level2_quad_clean.evt
Size (bytes)486,653,76084,792,960
Size464.1 MB 80.9 MB
Events in quadrant A2,637,614612,041
Events in quadrant B2,560,717635,779
Events in quadrant C6,429,024488,470
Events in quadrant D5,999,697481,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109023
B0109092
C0225322
D0211832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4989110.220485%
B4989751.503307%
C4989119623.972740%
D498983616.756865%

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 9025 4991 5 5 0.06% 0.10%
B 9025 4991 35 35 0.39% 0.70%
C 9025 4991 1192 1192 13.21% 23.88%
D 9025 4990 1092 1092 12.10% 21.88%

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 431220 3701.21 568 558 116.4
A 3 137 5979 46.59 568 558 116.4
A 13 254 5104 39.07 568 558 116.4
B 4 171 251158 2279.84 572 558 109.9
B 5 255 46440 417.41 572 558 109.9
B 12 111 13487 117.62 572 558 109.9
C 9 187 4168474 35546.43 505 509 117.3
C 15 214 187774 1597.09 505 509 117.3
C 0 10 75433 638.99 505 509 117.3
D 12 227 3585131 28356.67 517 504 126.4
D 2 249 125009 984.91 517 504 126.4
D 13 249 85383 671.45 517 504 126.4

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