ASTROSAT CZTI

Data Quality Report

Orbit 54474

Creation date: 2025-10-23T12:17:03.602121
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_54474cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54474cztM0_level2_quad_clean.evt
Size (bytes)731,496,96076,985,280
Size697.6 MB 73.4 MB
Events in quadrant A2,783,329620,913
Events in quadrant B10,785,467327,666
Events in quadrant C3,915,651584,330
Events in quadrant D9,087,049343,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134831
B0365621
C0162231
D0314811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6511160.245738%
B6510355654.623656%
C65111932.964214%
D6511258439.686684%

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 7596 6512 5 5 0.07% 0.08%
B 7595 6510 2564 2564 33.76% 39.39%
C 7596 6512 206 206 2.71% 3.16%
D 7595 6510 2109 2109 27.77% 32.40%

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 6 161 31945 187.08 676 659 167.2
A 4 3 22448 130.29 676 659 167.2
A 8 6 21106 122.26 676 659 167.2
B 5 172 7871239 68168.09 540 520 115.5
B 5 185 301570 2607.39 540 520 115.5
B 0 213 254538 2200.04 540 520 115.5
C 13 3 508414 2815.61 648 642 180.3
C 12 2 283949 1570.95 648 642 180.3
C 4 5 257323 1423.3 648 642 180.3
D 8 176 6045312 46038.59 457 435 131.3
D 2 172 305829 2325.92 457 435 131.3
D 3 12 296076 2251.64 457 435 131.3

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