ASTROSAT CZTI

Data Quality Report

Orbit 20056

Creation date: 2024-06-27T18:10:41.293692
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/AS1T03_117T01_9000002988_20056cztM0_level2.evt modeM0/AS1T03_117T01_9000002988_20056cztM0_level2_quad_clean.evt
Size (bytes)480,147,84092,689,920
Size457.9 MB 88.4 MB
Events in quadrant A3,672,082595,285
Events in quadrant B3,521,715598,986
Events in quadrant C3,256,524571,855
Events in quadrant D3,627,084564,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152162
B0146392
C0139202
D0152602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68331522.224499%
B6832931.361241%
C6832660.966042%
D68321011.478337%

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 7763 6834 92 92 1.19% 1.35%
B 7762 6833 28 28 0.36% 0.41%
C 7762 6833 0 0 0.00% 0.00%
D 7762 6833 59 59 0.76% 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 14 254 236803 1409.4 830 812 167.4
A 14 238 232677 1384.76 830 812 167.4
A 11 29 8856 48.04 830 812 167.4
B 10 245 254051 1580.05 826 804 160.3
B 12 111 19880 119.02 826 804 160.3
B 3 64 18351 109.48 826 804 160.3
C 14 238 124178 657.01 793 799 187.8
C 4 254 31740 164.76 793 799 187.8
C 3 233 8022 38.46 793 799 187.8
D 1 52 354179 1778.26 807 784 198.7
D 1 20 213083 1068.27 807 784 198.7
D 2 234 28547 139.7 807 784 198.7

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