ASTROSAT CZTI

Data Quality Report

Orbit 52551

Creation date: 2025-06-16T01:26:20.925142
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/AS1C09_011T06_9000006478_52551cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52551cztM0_level2_quad_clean.evt
Size (bytes)913,351,68071,585,280
Size871.0 MB 68.3 MB
Events in quadrant A4,554,069574,072
Events in quadrant B8,329,546509,176
Events in quadrant C7,510,374439,762
Events in quadrant D12,933,880208,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181151
B0290411
C0267861
D0426831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62305879.422151%
B6230161225.874799%
C6231158525.437329%
D6231424268.078960%

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 7175 6231 458 458 6.38% 7.35%
B 7175 6231 1226 1226 17.09% 19.68%
C 7176 6232 1363 1363 18.99% 21.87%
D 7175 6231 3790 3790 52.82% 60.82%

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 15 239 860099 5419.79 633 619 158.6
A 4 249 623551 3928.15 633 619 158.6
A 4 159 236709 1488.76 633 619 158.6
B 4 170 2842148 23110.79 578 559 123.0
B 10 44 2761273 22453.02 578 559 123.0
B 13 245 64762 522.17 578 559 123.0
C 15 248 2941169 18617.48 561 555 157.9
C 15 231 914484 5786.23 561 555 157.9
C 13 3 646963 4092.51 561 555 157.9
D 6 42 8398898 69615.41 409 389 120.6
D 8 176 1042940 8641.73 409 389 120.6
D 15 125 602918 4994.37 409 389 120.6

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