ASTROSAT CZTI

Data Quality Report

Orbit 24075

Creation date: 2024-06-27T19:01:49.538596
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/AS1A07_165T01_9000003558_24075cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24075cztM0_level2_quad_clean.evt
Size (bytes)499,017,600131,581,440
Size475.9 MB 125.5 MB
Events in quadrant A3,170,142891,546
Events in quadrant B3,374,541904,283
Events in quadrant C3,272,338868,919
Events in quadrant D4,833,924846,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139201
B0144601
C0140931
D0189241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6798721.059135%
B6798911.338629%
C67981151.691674%
D67981712.515446%

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 7253 6800 0 0 0.00% 0.00%
B 7253 6800 6 6 0.08% 0.09%
C 7253 6800 3 3 0.04% 0.04%
D 7253 6800 110 110 1.52% 1.62%

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 13 254 11386 64.12 819 801 165.1
A 0 226 7125 38.31 819 801 165.1
A 3 137 7022 37.69 819 801 165.1
B 0 189 111362 724.13 814 794 152.7
B 0 229 33580 214.72 814 794 152.7
B 15 33 28867 183.86 814 794 152.7
C 14 238 124324 678.41 783 788 182.1
C 0 239 50584 273.46 783 788 182.1
C 7 247 29246 156.28 783 788 182.1
D 8 195 1167182 6146.34 789 764 189.8
D 1 52 471569 2480.87 789 764 189.8
D 12 233 139042 728.64 789 764 189.8

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