ASTROSAT CZTI

Data Quality Report

Orbit 30922

Creation date: 2024-06-27T20:21:13.482322
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/AS1C06_007T01_9000004470_30922cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30922cztM0_level2_quad_clean.evt
Size (bytes)616,875,84079,441,920
Size588.3 MB 75.8 MB
Events in quadrant A3,171,281509,189
Events in quadrant B5,405,255504,377
Events in quadrant C3,588,979473,934
Events in quadrant D6,066,652454,527

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136361
B0206761
C0147341
D0226701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66411522.288812%
B66412583.884957%
C664170710.645987%
D66426419.650708%

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 7081 6641 0 0 0.00% 0.00%
B 7081 6641 14 14 0.20% 0.21%
C 7081 6641 0 0 0.00% 0.00%
D 7082 6642 487 487 6.88% 7.33%

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 11930 67.35 820 800 165.3
A 3 137 8011 43.63 820 800 165.3
A 0 226 7031 37.7 820 800 165.3
B 6 159 1915901 12172.56 811 792 157.3
B 6 36 128412 811.16 811 792 157.3
B 0 190 50844 318.13 811 792 157.3
C 14 238 275806 1571.38 751 756 175.0
C 14 254 223787 1274.19 751 756 175.0
C 3 233 83091 470.39 751 756 175.0
D 13 174 857670 4595.98 772 748 186.5
D 8 195 816344 4374.34 772 748 186.5
D 12 218 650902 3487.01 772 748 186.5

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