ASTROSAT CZTI

Data Quality Report

Orbit 58719

Creation date: 2026-08-05T11:31:04.886934
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_004T06_9000006594_58719cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58719cztM0_level2_quad_clean.evt
Size (bytes)577,082,88099,757,440
Size550.3 MB 95.1 MB
Events in quadrant A3,696,098682,380
Events in quadrant B4,526,043713,532
Events in quadrant C4,601,865598,725
Events in quadrant D7,991,728535,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158383
B0184131
C0188651
D02869218

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7037891.264743%
B70382523.580563%
C70396709.518397%
D7036117316.671404%

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 7523 7039 41 41 0.54% 0.58%
B 7523 7038 128 128 1.70% 1.82%
C 7524 7040 513 513 6.82% 7.29%
D 7524 7039 1056 1056 14.04% 15.00%

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 3 14 453377 2378.2 772 752 190.3
A 10 251 160854 841.21 772 752 190.3
A 3 245 48127 248.92 772 752 190.3
B 5 172 496510 3027.34 758 728 163.8
B 8 234 475195 2897.18 758 728 163.8
B 10 16 136565 829.45 758 728 163.8
C 13 3 1453427 7638.65 698 691 190.2
C 14 254 98397 513.75 698 691 190.2
C 4 5 80278 418.48 698 691 190.2
D 11 129 4450869 22148.56 705 675 200.9
D 2 62 294654 1463.13 705 675 200.9
D 8 240 152132 753.8 705 675 200.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct