ASTROSAT CZTI

Data Quality Report

Orbit 53366

Creation date: 2025-08-09T21:05:58.438920
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_011T09_9000006494_53366cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53366cztM0_level2_quad_clean.evt
Size (bytes)503,395,20091,794,240
Size480.1 MB 87.5 MB
Events in quadrant A3,470,561616,696
Events in quadrant B4,746,360629,299
Events in quadrant C6,094,181538,536
Events in quadrant D3,839,317559,981

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147641
B0183171
C0225071
D0156741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62311983.177660%
B62324907.862644%
C623270111.248395%
D62321031.652760%

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 7196 6232 131 131 1.82% 2.10%
B 7197 6233 220 220 3.06% 3.53%
C 7197 6233 557 557 7.74% 8.94%
D 7197 6233 44 44 0.61% 0.71%

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 15 174 651273 3905.61 669 653 166.6
A 14 254 33685 198.29 669 653 166.6
A 5 240 26842 157.21 669 653 166.6
B 4 206 906930 6576.47 650 629 137.8
B 4 171 483752 3505.73 650 629 137.8
B 10 28 222546 1610.32 650 629 137.8
C 15 224 1721527 10021.06 628 623 171.7
C 15 178 1143870 6657.29 628 623 171.7
C 15 158 244665 1421.09 628 623 171.7
D 0 18 488484 2613.58 655 627 186.7
D 2 249 129170 688.64 655 627 186.7
D 2 153 108894 580.01 655 627 186.7

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