ASTROSAT CZTI

Data Quality Report

Orbit 53077

Creation date: 2025-07-21T10:27:01.629251
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_53077cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53077cztM0_level2_quad_clean.evt
Size (bytes)915,929,28075,980,160
Size873.5 MB 72.5 MB
Events in quadrant A15,600,090112,650
Events in quadrant B5,076,805646,611
Events in quadrant C7,528,825517,330
Events in quadrant D5,187,589562,833

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0507972
B0197292
C0270262
D0200682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609572586.624300%
B66096089.199576%
C6609133420.184597%
D66094016.067484%

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 7799 6609 5009 5009 64.23% 75.79%
B 7799 6610 460 460 5.90% 6.96%
C 7799 6610 1095 1095 14.04% 16.57%
D 7799 6610 348 348 4.46% 5.26%

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 13729370 146663.47 373 365 93.6
A 7 206 133797 1425.42 373 365 93.6
A 3 14 108464 1154.79 373 365 93.6
B 1 255 2147413 15240.42 661 640 140.9
B 4 81 97318 686.34 661 640 140.9
B 10 247 60748 426.72 661 640 140.9
C 15 224 3475972 20676.28 612 605 168.1
C 1 241 742927 4416.36 612 605 168.1
C 9 38 383186 2276.12 612 605 168.1
D 1 241 697012 3747.36 645 615 185.8
D 2 62 683301 3673.59 645 615 185.8
D 12 17 439596 2362.19 645 615 185.8

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