ASTROSAT CZTI

Data Quality Report

Orbit 20190421_A05_107T01_9000002852_level2

Creation date: 2025-11-29T13:08:25.701784
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/AS1A05_107T01_9000002852cztM0_level2.fits modeM0/AS1A05_107T01_9000002852cztM0_level2_quad_clean.evt
Size (bytes)969,719,040875,928,960
Size924.8 MB 835.4 MB
Events in quadrant A5,939,5365,107,642
Events in quadrant B5,727,8985,171,571
Events in quadrant C5,911,5405,031,201
Events in quadrant D5,087,9824,516,298

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02057610
B02073140
C02076960
D02463960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019860
B019860
C019860
D019860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9776611801.206964%
B9776614951.529161%
C9776618731.915799%
D9776638763.964568%

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 110546 97756 0 0 0.00% 0.00%
B 110546 97756 0 0 0.00% 0.00%
C 110546 97756 0 0 0.00% 0.00%
D 110546 97614 0 0 0.00% 0.00%

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 0 29 5607 11.08 1546 1454 374.8
A 7 110 4659 8.55 1546 1454 374.8
A 9 19 4482 8.08 1546 1454 374.8
B 2 9 4654 10.81 1514 1441 297.3
B 2 8 3910 8.3 1514 1441 297.3
B 5 128 3792 7.91 1514 1441 297.3
C 1 80 4481 7.62 1559 1457 396.7
C 1 81 4450 7.54 1559 1457 396.7
C 12 241 4120 6.71 1559 1457 396.7
D 10 190 3778 6.52 1450 1325 376.1
D 3 14 3678 6.26 1450 1325 376.1
D 10 189 3609 6.07 1450 1325 376.1

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