ASTROSAT CZTI

Data Quality Report

Orbit 54402

Creation date: 2025-10-18T15:36:38.846193
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_126T19_9000006518_54402cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54402cztM0_level2_quad_clean.evt
Size (bytes)720,293,76076,979,520
Size686.9 MB 73.4 MB
Events in quadrant A2,950,446601,828
Events in quadrant B2,933,311647,552
Events in quadrant C5,597,774521,229
Events in quadrant D14,688,636117,960

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135901
B0135501
C0212481
D0479871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63401031.624606%
B63411101.734742%
C634182813.057877%
D6341517881.659044%

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 7195 6340 21 21 0.29% 0.33%
B 7196 6342 9 9 0.13% 0.14%
C 7196 6342 747 747 10.38% 11.78%
D 7196 6341 4786 4786 66.51% 75.48%

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 12 15 109544 649.43 681 664 167.7
A 0 8 56858 335.18 681 664 167.7
A 8 246 42545 249.8 681 664 167.7
B 0 213 57495 391.62 668 645 145.2
B 4 81 47234 320.94 668 645 145.2
B 5 185 44212 300.12 668 645 145.2
C 13 3 1375913 7974.27 621 615 172.5
C 4 5 602689 3490.95 621 615 172.5
C 1 241 502758 2911.53 621 615 172.5
D 8 176 12781547 141857.32 315 300 90.1
D 7 70 240829 2669.6 315 300 90.1
D 2 172 103284 1143.01 315 300 90.1

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