ASTROSAT CZTI

Data Quality Report

Orbit 08385

Creation date: 2024-06-27T15:32:06.341413
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_076T04_9000001172_08385cztM0_level2.evt modeM0/AS1G07_076T04_9000001172_08385cztM0_level2_quad_clean.evt
Size (bytes)543,692,16096,045,120
Size518.5 MB 91.6 MB
Events in quadrant A3,867,756594,409
Events in quadrant B4,202,097599,884
Events in quadrant C3,874,363585,918
Events in quadrant D3,976,931571,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169632
B0177391
C0170141
D0174681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80143734.654355%
B80143864.816571%
C80142713.381582%
D80142773.456451%

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 8094 8014 0 0 0.00% 0.00%
B 8094 8015 9 9 0.11% 0.11%
C 8094 8015 4 4 0.05% 0.05%
D 8094 8015 18 18 0.22% 0.22%

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 0 226 9371 40.69 1005 981 206.2
A 12 194 9011 38.95 1005 981 206.2
A 15 236 4263 15.92 1005 981 206.2
B 4 48 153433 775.14 1003 974 196.7
B 0 214 65924 330.22 1003 974 196.7
B 4 81 44229 219.92 1003 974 196.7
C 1 16 23701 98.99 979 981 229.5
C 8 128 19105 78.97 979 981 229.5
C 8 112 8984 34.87 979 981 229.5
D 2 14 67435 257.51 979 950 258.2
D 12 233 57878 220.49 979 950 258.2
D 1 52 43989 166.7 979 950 258.2

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