ASTROSAT CZTI

Data Quality Report

Orbit 54461

Creation date: 2025-10-22T15:07:25.906875
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_54461cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54461cztM0_level2_quad_clean.evt
Size (bytes)794,808,00073,391,040
Size758.0 MB 70.0 MB
Events in quadrant A3,371,632598,838
Events in quadrant B2,969,534649,142
Events in quadrant C7,390,100477,502
Events in quadrant D15,184,36342,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147902
B0138121
C0265121
D0495851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65021221.876346%
B6503771.184069%
C6503137721.174842%
D6503608693.587575%

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 7052 6503 25 25 0.35% 0.38%
B 7053 6504 17 17 0.24% 0.26%
C 7052 6503 1180 1180 16.73% 18.15%
D 7052 6502 5076 5076 71.98% 78.07%

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 8 9 503677 3003.18 683 664 167.5
A 8 6 124554 739.67 683 664 167.5
A 4 3 30131 175.93 683 664 167.5
B 5 185 116939 801.51 673 647 145.1
B 0 213 60482 412.4 673 647 145.1
B 5 172 49360 335.74 673 647 145.1
C 7 64 3495949 21203.32 598 592 164.8
C 4 5 653607 3961.28 598 592 164.8
C 9 38 234489 1418.85 598 592 164.8
D 12 1 11585265 198383.39 198 188 58.4
D 8 176 2583469 44236.22 198 188 58.4
D 15 108 78043 1333.19 198 188 58.4

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