ASTROSAT CZTI

Data Quality Report

Orbit 44686

Creation date: 2024-06-27T23:05:16.164778
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/AS1A13_072T01_9000006008_44686cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44686cztM0_level2_quad_clean.evt
Size (bytes)1,178,516,160252,092,160
Size1.1 GB 240.4 MB
Events in quadrant A12,301,7281,691,900
Events in quadrant B8,262,3481,730,686
Events in quadrant C7,104,8451,661,771
Events in quadrant D14,700,4911,427,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0501903
B0356333
C0332923
D0550163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162384172.568050%
B162383852.370982%
C162371360.837593%
D1623814598.985097%

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 18093 16241 97 97 0.54% 0.60%
B 18093 16241 141 141 0.78% 0.87%
C 18092 16240 9 9 0.05% 0.06%
D 18093 16241 1091 1091 6.03% 6.72%

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 4566520 12310.12 1785 1742 370.8
A 15 223 675900 1818.04 1785 1742 370.8
A 13 248 82175 216.91 1785 1742 370.8
B 4 171 324887 929.84 1774 1718 347.6
B 0 183 226544 646.88 1774 1718 347.6
B 0 186 151041 429.64 1774 1718 347.6
C 14 254 141190 338.38 1756 1766 412.0
C 3 233 60532 142.62 1756 1766 412.0
C 2 14 39095 90.6 1756 1766 412.0
D 1 52 4232003 10050.43 1688 1635 420.9
D 2 249 1237680 2936.57 1688 1635 420.9
D 13 249 1182326 2805.06 1688 1635 420.9

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