ASTROSAT CZTI

Data Quality Report

Orbit 20190405_A05_046T01_9000002834_level2

Creation date: 2025-11-29T04:23:43.751401
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/AS1A05_046T01_9000002834cztM0_level2.fits modeM0/AS1A05_046T01_9000002834cztM0_level2_quad_clean.evt
Size (bytes)3,028,207,6802,730,772,800
Size2.8 GB 2.5 GB
Events in quadrant A18,731,12416,218,921
Events in quadrant B18,031,27016,321,004
Events in quadrant C18,442,19215,651,347
Events in quadrant D15,146,61813,169,751

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063960
B063700
C063780
D063720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06471430
B07032350
C06770410
D09798560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05120
B05120
C05120
D05110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31174038151.223776%
B31153674552.392982%
C31170069012.213988%
D3111113531811.352218%

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 371256 312728 0 0 0.00% 0.00%
B 371256 312458 0 0 0.00% 0.00%
C 371256 312663 0 0 0.00% 0.00%
D 371256 311814 0 0 0.00% 0.00%

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 29 18116 11.4 4875 4567 1188.9
A 7 110 15155 8.91 4875 4567 1188.9
A 9 19 13888 7.84 4875 4567 1188.9
B 2 9 14740 11.11 4756 4525 919.1
B 2 8 12337 8.5 4756 4525 919.1
B 3 17 11913 8.04 4756 4525 919.1
C 12 241 12916 6.69 4872 4542 1250.9
C 12 250 12507 6.37 4872 4542 1250.9
C 3 126 12456 6.33 4872 4542 1250.9
D 10 190 11400 6.56 4332 3955 1134.8
D 3 14 10772 6.01 4332 3955 1134.8
D 7 3 10734 5.97 4332 3955 1134.8

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