ASTROSAT CZTI

Data Quality Report

Orbit 58164

Creation date: 2026-06-30T17:58:38.200318
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_042T02_9000006586_58164cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58164cztM0_level2_quad_clean.evt
Size (bytes)613,641,60089,435,520
Size585.2 MB 85.3 MB
Events in quadrant A3,118,394678,335
Events in quadrant B12,014,855340,993
Events in quadrant C3,389,865641,431
Events in quadrant D3,687,722595,509

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135492
B0401526
C0146362
D0153222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64841071.650216%
B6483382759.031313%
C64831021.573346%
D64832203.393491%

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 7639 6484 5 5 0.07% 0.08%
B 7637 6482 3256 3256 42.63% 50.23%
C 7638 6483 6 6 0.08% 0.09%
D 7638 6483 135 135 1.77% 2.08%

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 13 248 42167 217.33 772 751 190.6
A 2 143 33477 171.73 772 751 190.6
A 4 3 21564 109.22 772 751 190.6
B 10 128 9144856 80667.47 531 512 113.4
B 10 247 135672 1192.32 531 512 113.4
B 4 201 102614 900.7 531 512 113.4
C 14 96 152309 743.41 741 736 203.9
C 12 252 129869 633.35 741 736 203.9
C 3 113 107649 524.37 741 736 203.9
D 12 128 164305 794.31 737 706 206.0
D 7 222 118268 570.79 737 706 206.0
D 2 252 76267 366.87 737 706 206.0

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