ASTROSAT CZTI

Data Quality Report

Orbit 54358

Creation date: 2025-10-15T16:25:15.678241
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_126T15_9000006516_54358cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54358cztM0_level2_quad_clean.evt
Size (bytes)668,548,80083,030,400
Size637.6 MB 79.2 MB
Events in quadrant A3,021,939640,856
Events in quadrant B3,095,697678,032
Events in quadrant C4,879,328567,456
Events in quadrant D13,238,875169,570

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138040
B0141730
C0193602
D0438480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6571711.080505%
B65721532.328058%
C65715328.096180%
D6571483273.535231%

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 7556 6573 5 5 0.07% 0.08%
B 7557 6574 59 59 0.78% 0.90%
C 7556 6573 489 489 6.47% 7.44%
D 7556 6573 3891 3891 51.50% 59.20%

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 7 206 210611 1219.5 699 682 172.1
A 4 78 14921 82.72 699 682 172.1
A 13 254 13367 73.69 699 682 172.1
B 0 213 152156 1043.74 682 658 145.1
B 10 247 87913 601.14 682 658 145.1
B 0 171 36171 244.67 682 658 145.1
C 1 29 916511 5159.57 644 637 177.5
C 14 254 366075 2058.69 644 637 177.5
C 2 255 309403 1739.43 644 637 177.5
D 8 176 10692758 113731.35 329 313 94.0
D 15 108 741010 7878.5 329 313 94.0
D 12 3 181822 1930.64 329 313 94.0

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