ASTROSAT CZTI

Data Quality Report

Orbit 53007

Creation date: 2025-07-16T18:48:59.881689
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/AS1C09_011T07_9000006488_53007cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53007cztM0_level2_quad_clean.evt
Size (bytes)1,041,226,56053,205,120
Size993.0 MB 50.7 MB
Events in quadrant A14,653,54614,201
Events in quadrant B3,806,807584,328
Events in quadrant C9,285,097316,700
Events in quadrant D10,344,922285,401

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04761884
B01535311
C03171475
D03488986

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5866576398.244119%
B58702404.088586%
C5861269045.896605%
D5859280147.806793%

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 6831 5866 5347 5347 78.28% 91.15%
B 6832 5874 20 20 0.29% 0.34%
C 6832 5873 1927 1927 28.21% 32.81%
D 6832 5872 2367 2367 34.65% 40.31%

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 9 191 12143873 219201.76 214 209 55.4
A 15 190 867665 15658.2 214 209 55.4
A 4 238 316541 5710.02 214 209 55.4
B 10 254 1003918 7855.45 602 581 127.7
B 10 247 115482 899.6 602 581 127.7
B 5 172 44184 341.38 602 581 127.7
C 7 80 4416446 35750.37 446 441 123.5
C 15 224 1635684 13238.33 446 441 123.5
C 12 254 818040 6618.98 446 441 123.5
D 12 17 2395523 18305.13 453 431 130.8
D 2 62 2273413 17371.87 453 431 130.8
D 8 176 2270631 17350.61 453 431 130.8

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