ASTROSAT CZTI

Data Quality Report

Orbit 04747

Creation date: 2024-06-27T14:46:35.614705
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/AS1SLEW_01234_9000000597_04747cztM0_level2.evt modeM0/AS1SLEW_01234_9000000597_04747cztM0_level2_quad_clean.evt
Size (bytes)77,817,6004,000,320
Size74.2 MB 3.8 MB
Events in quadrant A543,3376,600
Events in quadrant B612,7156,502
Events in quadrant C562,1966,528
Events in quadrant D550,0956,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025220
B026790
C025320
D025760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125600.000000%
B125630.238854%
C125600.000000%
D125600.000000%

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 1256 1256 1 1 0.08% 0.08%
B 1256 1256 2 2 0.16% 0.16%
C 1256 1256 0 0 0.00% 0.00%
D 1256 1256 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 10 17 4058 127.14 140 137 30.8
A 0 226 1397 40.86 140 137 30.8
A 12 194 1339 38.98 140 137 30.8
B 14 167 57686 2018.05 142 139 28.5
B 12 111 2465 81.57 142 139 28.5
B 11 111 1958 63.79 142 139 28.5
C 8 128 5854 166.35 140 141 34.3
C 14 48 4282 120.58 140 141 34.3
C 8 144 2130 57.92 140 141 34.3
D 2 234 11754 341.53 138 134 34.0
D 1 31 8871 256.79 138 134 34.0
D 13 238 4827 137.94 138 134 34.0

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