ASTROSAT CZTI

Data Quality Report

Orbit 58163

Creation date: 2026-06-30T17:40:55.872559
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_58163cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58163cztM0_level2_quad_clean.evt
Size (bytes)718,594,56080,729,280
Size685.3 MB 77.0 MB
Events in quadrant A3,061,286674,478
Events in quadrant B15,712,03591,029
Events in quadrant C3,360,740639,893
Events in quadrant D3,966,573591,359

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
A0133212
B0511312
C0144652
D0160332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6419831.293036%
B6419582490.730643%
C6419771.199564%
D64192203.427325%

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 7589 6419 2 2 0.03% 0.03%
B 7589 6419 5533 5533 72.91% 86.20%
C 7589 6419 23 23 0.30% 0.36%
D 7589 6419 137 137 1.81% 2.13%

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 11 3 53442 282.2 762 744 186.7
A 4 3 18450 94.82 762 744 186.7
A 6 226 16651 85.18 762 744 186.7
B 10 128 14444140 250846.63 266 257 57.6
B 4 201 79719 1380.02 266 257 57.6
B 0 79 47885 827.15 266 257 57.6
C 12 252 137679 685.39 733 726 199.8
C 14 96 134300 668.48 733 726 199.8
C 3 113 107626 534.99 733 726 199.8
D 6 239 239545 1173.73 727 697 203.5
D 8 240 196252 960.98 727 697 203.5
D 12 110 177861 870.6 727 697 203.5

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