ASTROSAT CZTI

Data Quality Report

Orbit 26548

Creation date: 2024-06-27T19:30:18.326710
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_095T02_9000003840_26548cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26548cztM0_level2_quad_clean.evt
Size (bytes)531,103,68093,744,000
Size506.5 MB 89.4 MB
Events in quadrant A3,694,661614,662
Events in quadrant B3,992,494622,856
Events in quadrant C3,273,535592,707
Events in quadrant D4,714,578586,883

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146740
B0157600
C0134360
D0180070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60402383.940397%
B60412634.353584%
C60411201.986426%
D60413786.257242%

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 7365 6040 146 146 1.98% 2.42%
B 7366 6041 128 128 1.74% 2.12%
C 7366 6041 1 1 0.01% 0.02%
D 7365 6041 295 295 4.01% 4.88%

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 603091 3855.8 798 785 156.2
A 5 168 11936 71.39 798 785 156.2
A 13 254 10224 60.43 798 785 156.2
B 3 64 652617 4534.96 791 776 143.7
B 5 172 182778 1266.22 791 776 143.7
B 3 112 30471 206.59 791 776 143.7
C 3 233 167209 963.42 759 766 172.8
C 14 238 125636 722.79 759 766 172.8
C 14 225 14699 80.65 759 766 172.8
D 1 52 1354481 7507.03 753 737 180.3
D 2 250 189548 1047.03 753 737 180.3
D 7 80 179207 989.68 753 737 180.3

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