ASTROSAT CZTI

Data Quality Report

Orbit 53819

Creation date: 2025-09-10T10:44:51.626159
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_022T04_9000006506_53819cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53819cztM0_level2_quad_clean.evt
Size (bytes)978,125,76064,719,360
Size932.8 MB 61.7 MB
Events in quadrant A14,324,365159,005
Events in quadrant B2,927,941659,399
Events in quadrant C5,108,897557,568
Events in quadrant D13,368,234152,146

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468171
B0129401
C0194571
D0439401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6176486478.756477%
B6177310.501862%
C61774537.333657%
D6176472476.489637%

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 7396 6176 4771 4771 64.51% 77.25%
B 7397 6178 3 3 0.04% 0.05%
C 7397 6178 351 351 4.75% 5.68%
D 7396 6177 4060 4060 54.89% 65.73%

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 12427805 110755.75 446 435 112.2
A 4 249 34666 305.08 446 435 112.2
A 8 249 29940 262.96 446 435 112.2
B 4 81 95992 675.17 664 640 141.2
B 7 0 65153 456.8 664 640 141.2
B 8 234 35183 244.59 664 640 141.2
C 15 224 1646305 9473.98 632 626 173.7
C 15 158 379886 2183.36 632 626 173.7
C 5 10 291120 1672.34 632 626 173.7
D 8 176 8057404 82738.81 334 319 97.4
D 2 172 3115267 31987.64 334 319 97.4
D 10 172 598759 6145.43 334 319 97.4

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