ASTROSAT CZTI

Data Quality Report

Orbit 56832

Creation date: 2026-03-31T04:48:19.193363
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_9000006562_56832cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56832cztM0_level2_quad_clean.evt
Size (bytes)861,390,72093,867,840
Size821.5 MB 89.5 MB
Events in quadrant A6,361,774686,909
Events in quadrant B6,740,813665,361
Events in quadrant C12,537,101370,531
Events in quadrant D5,672,986602,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243170
B0251310
C0423500
D0220861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74201051.415094%
B742191212.289449%
C7421335845.249966%
D74203164.258760%

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 7420 7420 47 47 0.63% 0.63%
B 7421 7421 605 605 8.15% 8.15%
C 7421 7421 3159 3159 42.57% 42.57%
D 7420 7420 333 333 4.49% 4.49%

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 3 14 2952460 15340.71 775 754 192.4
A 10 251 129599 669.64 775 754 192.4
A 7 64 124043 640.76 775 754 192.4
B 5 185 1245637 7945.69 726 699 156.7
B 5 172 1220471 7785.07 726 699 156.7
B 2 249 975475 6221.41 726 699 156.7
C 12 249 8769569 53855.35 593 587 162.8
C 12 252 889791 5461.11 593 587 162.8
C 9 38 99447 607.16 593 587 162.8
D 2 62 1348778 6448.52 739 707 209.1
D 8 240 686962 3282.71 739 707 209.1
D 2 31 259861 1239.67 739 707 209.1

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