ASTROSAT CZTI

Data Quality Report

Orbit 27869

Creation date: 2024-06-27T19:45:23.981151
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/AS1A10_002T05_9000004024_27869cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27869cztM0_level2_quad_clean.evt
Size (bytes)651,216,960119,931,840
Size621.0 MB 114.4 MB
Events in quadrant A3,937,025800,591
Events in quadrant B4,609,701777,360
Events in quadrant C4,386,062757,953
Events in quadrant D6,234,083726,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171260
B0191890
C0183800
D0242140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8204831.011702%
B82051902.315661%
C82051712.084095%
D82056067.385740%

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 8719 8206 0 0 0.00% 0.00%
B 8720 8205 18 18 0.21% 0.22%
C 8720 8206 0 0 0.00% 0.00%
D 8720 8206 340 340 3.90% 4.14%

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 14828 66.8 1019 997 207.1
A 3 137 9619 41.64 1019 997 207.1
A 0 226 8729 37.34 1019 997 207.1
B 10 245 298032 1546.15 999 971 192.1
B 0 190 111193 573.68 999 971 192.1
B 10 246 100831 519.75 999 971 192.1
C 3 233 426613 1861.97 973 977 228.6
C 14 238 152426 662.52 973 977 228.6
C 15 208 9725 38.27 973 977 228.6
D 1 52 1970041 8481.48 966 942 232.2
D 2 250 437757 1881.49 966 942 232.2
D 2 234 40946 172.31 966 942 232.2

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