ASTROSAT CZTI

Data Quality Report

Orbit 53480

Creation date: 2025-08-17T16:15:52.328768
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_002T06_9000006496_53480cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53480cztM0_level2_quad_clean.evt
Size (bytes)754,862,40076,055,040
Size719.9 MB 72.5 MB
Events in quadrant A8,574,722480,985
Events in quadrant B3,346,217639,406
Events in quadrant C12,777,188223,134
Events in quadrant D2,765,681527,579

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297721
B0141121
C0422247
D0128701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6177153024.769305%
B61771031.667476%
C6176396564.200130%
D6177530.858022%

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 7061 6176 1359 1359 19.25% 22.00%
B 7062 6177 37 37 0.52% 0.60%
C 7060 6175 3929 3929 55.65% 63.63%
D 7062 6177 17 17 0.24% 0.28%

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 63 3169187 21018.54 616 602 150.8
A 15 174 1216421 8065.03 616 602 150.8
A 3 62 1122940 7444.93 616 602 150.8
B 10 254 498624 3519.05 660 636 141.5
B 5 185 91823 644.38 660 636 141.5
B 10 28 40441 281.28 660 636 141.5
C 7 64 7685878 66109.49 419 415 116.3
C 9 38 1186366 10201.42 419 415 116.3
C 15 224 1140177 9804.1 419 415 116.3
D 3 12 99684 546.36 644 616 181.3
D 5 173 50800 276.76 644 616 181.3
D 13 170 42820 232.75 644 616 181.3

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