ASTROSAT CZTI

Data Quality Report

Orbit 47237

Creation date: 2024-06-27T23:33:14.257814
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/AS1C09_005T01_9000006304_47237cztM0_level2.fits modeM0/AS1C09_005T01_9000006304_47237cztM0_level2_quad_clean.evt
Size (bytes)1,368,524,160285,621,120
Size1.3 GB 272.4 MB
Events in quadrant A20,467,5801,862,166
Events in quadrant B9,205,7511,949,887
Events in quadrant C7,917,0941,896,713
Events in quadrant D11,651,8341,674,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0738613
B0401303
C0374643
D0480633

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1833511496.266703%
B183354192.285247%
C183351270.692664%
D183349515.187084%

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 19745 18338 338 338 1.71% 1.84%
B 19745 18338 72 72 0.36% 0.39%
C 19745 18337 9 9 0.05% 0.05%
D 19744 18337 644 644 3.26% 3.51%

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 10 83 9697371 23498.38 1996 1946 412.6
A 9 191 2887615 6993.87 1996 1946 412.6
A 7 3 55562 129.95 1996 1946 412.6
B 5 32 497782 1267.09 2008 1945 391.3
B 0 200 291072 738.85 2008 1945 391.3
B 0 190 145656 367.25 2008 1945 391.3
C 14 254 63194 132.24 1989 1999 462.7
C 0 207 36986 75.61 1989 1999 462.7
C 3 233 24795 49.26 1989 1999 462.7
D 2 37 2249620 4573.37 1954 1891 491.5
D 12 1 813424 1651.2 1954 1891 491.5
D 1 47 222978 449.84 1954 1891 491.5

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