ASTROSAT CZTI

Data Quality Report

Orbit 56074

Creation date: 2026-02-09T18:02:22.284217
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/AS1A14_083T03_9000006548_56074cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56074cztM0_level2_quad_clean.evt
Size (bytes)431,599,680102,585,600
Size411.6 MB 97.8 MB
Events in quadrant A4,259,256657,523
Events in quadrant B3,842,421715,210
Events in quadrant C3,652,087638,143
Events in quadrant D3,660,189591,409

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179942
B0167862
C0163112
D0165032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72302543.513140%
B72291782.462305%
C7229560.774658%
D72291101.521649%

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 7655 7231 178 178 2.33% 2.46%
B 7654 7229 82 82 1.07% 1.13%
C 7654 7230 50 50 0.65% 0.69%
D 7654 7230 117 117 1.53% 1.62%

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 15 32 847679 4562.56 747 728 185.6
A 3 14 138038 739.7 747 728 185.6
A 0 8 127721 684.12 747 728 185.6
B 0 231 183165 1151.12 749 724 158.5
B 2 249 180877 1136.69 749 724 158.5
B 0 171 98900 619.45 749 724 158.5
C 15 147 340179 1701.93 728 721 199.5
C 13 3 137770 687.12 728 721 199.5
C 12 252 136276 679.63 728 721 199.5
D 3 12 166844 823.23 719 686 201.8
D 8 240 113459 558.74 719 686 201.8
D 12 33 99774 490.93 719 686 201.8

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