ASTROSAT CZTI

Data Quality Report

Orbit 25779

Creation date: 2024-06-27T19:21:21.837109
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/AS1A09_147T01_9000003754_25779cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25779cztM0_level2_quad_clean.evt
Size (bytes)502,171,20099,181,440
Size478.9 MB 94.6 MB
Events in quadrant A3,764,724657,142
Events in quadrant B3,386,395674,059
Events in quadrant C3,337,854629,255
Events in quadrant D4,308,778620,452

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152350
B0138920
C0136600
D0168690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60591562.574682%
B6059621.023271%
C6059831.369863%
D60591823.003796%

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 7454 6060 72 72 0.97% 1.19%
B 7454 6059 0 0 0.00% 0.00%
C 7454 6059 0 0 0.00% 0.00%
D 7454 6060 124 124 1.66% 2.05%

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 13 460015 2743.42 854 842 167.4
A 6 16 8710 47.01 854 842 167.4
A 13 254 8540 45.99 854 842 167.4
B 12 111 17609 106.04 861 843 158.1
B 11 111 15946 95.52 861 843 158.1
B 0 219 15842 94.87 861 843 158.1
C 14 238 137040 726.96 817 826 187.4
C 3 233 17108 86.89 817 826 187.4
C 13 61 5666 25.83 817 826 187.4
D 7 80 434250 2240.66 814 796 193.4
D 8 195 406164 2095.47 814 796 193.4
D 1 52 293322 1512.16 814 796 193.4

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