ASTROSAT CZTI

Data Quality Report

Orbit 13957

Creation date: 2024-06-27T16:48:28.071746
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/AS1A04_225T01_9000002062_13957cztM0_level2.evt modeM0/AS1A04_225T01_9000002062_13957cztM0_level2_quad_clean.evt
Size (bytes)559,802,880105,281,280
Size533.9 MB 100.4 MB
Events in quadrant A3,386,084673,871
Events in quadrant B3,608,022699,522
Events in quadrant C3,439,857678,893
Events in quadrant D6,022,830625,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151893
B0156252
C0150462
D0231172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73201261.721311%
B73201582.158470%
C73201301.775956%
D73203755.122951%

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 7441 7324 16 16 0.22% 0.22%
B 7441 7324 12 12 0.16% 0.16%
C 7441 7324 0 0 0.00% 0.00%
D 7441 7324 146 146 1.96% 1.99%

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 15 69 46942 263.23 854 836 175.2
A 14 111 23677 130.4 854 836 175.2
A 1 162 16690 90.51 854 836 175.2
B 0 189 67396 409.03 863 838 162.7
B 4 80 35970 215.9 863 838 162.7
B 4 142 30028 179.39 863 838 162.7
C 3 233 124231 630.22 849 852 195.8
C 13 61 6161 27.12 849 852 195.8
C 8 128 4475 18.51 849 852 195.8
D 13 122 1224757 6144.86 820 799 199.2
D 10 157 676827 3393.99 820 799 199.2
D 12 110 374726 1877.29 820 799 199.2

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