ASTROSAT CZTI

Data Quality Report

Orbit 38641

Creation date: 2024-06-27T21:54:31.534952
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/AS1A12_061T03_9000005390_38641cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38641cztM0_level2_quad_clean.evt
Size (bytes)414,167,04099,120,960
Size395.0 MB 94.5 MB
Events in quadrant A3,420,831665,797
Events in quadrant B3,265,022678,793
Events in quadrant C2,940,591657,335
Events in quadrant D5,241,173582,580

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136923
B0132172
C0122862
D0196102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5964510.855131%
B5964330.553320%
C596490.150905%
D59644217.059021%

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 7277 5965 31 31 0.43% 0.52%
B 7277 5965 15 15 0.21% 0.25%
C 7277 5965 3 3 0.04% 0.05%
D 7277 5965 415 415 5.70% 6.96%

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 10 83 472384 3424.88 674 660 137.7
A 13 248 254871 1845.66 674 660 137.7
A 9 143 28612 202.94 674 660 137.7
B 4 251 262689 2026.54 674 655 129.3
B 4 171 172822 1331.52 674 655 129.3
B 5 184 67591 517.67 674 655 129.3
C 15 214 241474 1556.84 662 667 154.7
C 3 110 65056 416.28 662 667 154.7
C 0 10 18590 115.87 662 667 154.7
D 2 249 605315 3826.72 644 626 158.0
D 1 47 455731 2880.09 644 626 158.0
D 13 174 421607 2664.14 644 626 158.0

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