ASTROSAT CZTI

Data Quality Report

Orbit 20170508_G07_027T01_9000001210_level2

Creation date: 2025-11-11T20:15:18.323642
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/AS1G07_027T01_9000001210cztM0_level2.fits modeM0/AS1G07_027T01_9000001210cztM0_level2_quad_clean.evt
Size (bytes)193,377,600190,134,720
Size184.4 MB 181.3 MB
Events in quadrant A1,173,7521,146,689
Events in quadrant B1,133,8841,134,368
Events in quadrant C1,177,0441,098,871
Events in quadrant D1,006,9321,012,978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417850
B0412830
C0409840
D0449340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198272801.412216%
B198272491.255863%
C198272131.074293%
D198255142.592686%

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 23902 19823 0 0 0.00% 0.00%
B 23902 19823 0 0 0.00% 0.00%
C 23902 19823 0 0 0.00% 0.00%
D 23902 19766 0 0 0.00% 0.00%

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 0 29 1156 11.17 305 286 77.9
A 7 110 1002 9.19 305 286 77.9
A 0 30 922 8.17 305 286 77.9
B 2 9 981 11.52 299 285 60.4
B 3 17 758 7.83 299 285 60.4
B 14 254 755 7.78 299 285 60.4
C 1 80 858 6.81 310 289 83.5
C 1 81 843 6.63 310 289 83.5
C 12 241 802 6.14 310 289 83.5
D 3 14 758 6.39 286 261 77.7
D 10 189 749 6.28 286 261 77.7
D 6 231 734 6.08 286 261 77.7

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