ASTROSAT CZTI

Data Quality Report

Orbit 55719

Creation date: 2026-01-15T09:23:15.024121
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_099T04_9000006540_55719cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55719cztM0_level2_quad_clean.evt
Size (bytes)538,911,36092,269,440
Size513.9 MB 88.0 MB
Events in quadrant A6,372,104539,873
Events in quadrant B2,889,765672,111
Events in quadrant C3,911,906596,852
Events in quadrant D6,254,889517,924

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237182
B0137102
C0162122
D0232832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6697103615.469613%
B6697300.447962%
C66961692.523895%
D669675111.215651%

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 7702 6698 895 895 11.62% 13.36%
B 7702 6698 2 2 0.03% 0.03%
C 7701 6697 102 102 1.32% 1.52%
D 7701 6697 692 692 8.99% 10.33%

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 32 3290539 20526.02 654 640 160.3
A 8 192 152859 949.71 654 640 160.3
A 12 115 102342 634.53 654 640 160.3
B 0 199 33034 216.72 696 673 149.3
B 5 248 25770 168.07 696 673 149.3
B 0 197 24529 159.76 696 673 149.3
C 15 164 260306 1379.92 685 679 188.1
C 15 208 241700 1281.03 685 679 188.1
C 12 252 142396 753.23 685 679 188.1
D 11 129 3383368 18231.98 655 626 185.5
D 10 181 91568 490.15 655 626 185.5
D 7 129 65919 351.91 655 626 185.5

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