ASTROSAT CZTI

Data Quality Report

Orbit 49674

Creation date: 2024-12-09T18:33:24.402842
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_233T01_9000006438_49674cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49674cztM0_level2_quad_clean.evt
Size (bytes)3,205,157,76091,572,480
Size3.0 GB 87.3 MB
Events in quadrant A44,922,89617,890
Events in quadrant B14,915,3571,514,168
Events in quadrant C15,548,452827
Events in quadrant D41,868,9622,588

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01458142
B0566042
C0591222
D01367963

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179441781499.275524%
B17944265014.768168%
C179451793899.960992%
D179441792599.894115%

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 19024 17943 16629 16629 87.41% 92.68%
B 19024 17944 1747 1747 9.18% 9.74%
C 19024 17944 863 863 4.54% 4.81%
D 19023 17942 14084 14084 74.04% 78.50%

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 0 99 16410988 88867.85 503 477 184.7
A 10 83 8618156 46667.32 503 477 184.7
A 0 98 3137514 16988.0 503 477 184.7
B 3 232 3328235 8964.26 1757 1700 371.1
B 4 206 959054 2579.85 1757 1700 371.1
B 3 216 770277 2071.14 1757 1700 371.1
C 15 180 3136647 58382.45 68 61 53.7
C 15 190 2000687 37238.4 68 61 53.7
C 15 181 1663194 30956.52 68 61 53.7
D 15 184 8352438 39541.55 312 280 211.2
D 15 40 6883725 32588.23 312 280 211.2
D 15 140 2674843 12662.16 312 280 211.2

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