ASTROSAT CZTI

Data Quality Report

Orbit 58586

Creation date: 2026-07-27T03:17:10.848905
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_044T04_9000006592_58586cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58586cztM0_level2_quad_clean.evt
Size (bytes)408,876,48095,739,840
Size389.9 MB 91.3 MB
Events in quadrant A3,478,536631,036
Events in quadrant B3,870,539676,729
Events in quadrant C3,282,882606,302
Events in quadrant D4,011,558543,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148341
B0157671
C0142491
D0163741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6322981.550142%
B63221993.147738%
C6321751.186521%
D63212784.398038%

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 7513 6323 52 52 0.69% 0.82%
B 7513 6323 112 112 1.49% 1.77%
C 7512 6322 69 69 0.92% 1.09%
D 7512 6322 261 261 3.47% 4.13%

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 3 14 315745 1784.63 704 683 176.5
A 10 17 103837 584.3 704 683 176.5
A 12 114 102386 576.09 704 683 176.5
B 6 255 345236 2292.06 698 672 150.3
B 5 172 262903 1744.38 698 672 150.3
B 4 171 156834 1038.8 698 672 150.3
C 13 3 226785 1187.1 686 679 190.5
C 12 252 111407 581.34 686 679 190.5
C 12 254 89918 468.52 686 679 190.5
D 15 94 735625 3821.21 668 637 192.3
D 2 249 150453 778.89 668 637 192.3
D 8 160 124311 642.98 668 637 192.3

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