ASTROSAT CZTI

Data Quality Report

Orbit 00970

Creation date: 2024-06-27T14:05:29.540259
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/AS1P01_998T01_9000000188_00970cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00970cztM0_level2_quad_clean.evt
Size (bytes)1,044,815,04087,609,600
Size996.4 MB 83.6 MB
Events in quadrant A6,612,087605,235
Events in quadrant B7,488,329597,933
Events in quadrant C6,862,373588,102
Events in quadrant D10,304,368464,999

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236560
B0262710
C0243920
D0348840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5668110.194072%
B5668480.846860%
C5669130.229317%
D5669158627.976715%

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 6938 5669 175 175 2.52% 3.09%
B 6938 5669 359 359 5.17% 6.33%
C 6939 5670 155 155 2.23% 2.73%
D 6939 5670 1826 1826 26.32% 32.20%

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 12 189 5986 10.36 1721 1728 410.9
A 11 79 5904 10.16 1721 1728 410.9
A 10 133 5322 8.75 1721 1728 410.9
B 0 220 271038 646.22 1794 1796 416.6
B 5 191 81698 191.78 1794 1796 416.6
B 5 249 78102 183.15 1794 1796 416.6
C 15 241 280176 607.1 1663 1723 458.7
C 3 79 32393 66.87 1663 1723 458.7
C 3 111 27797 56.85 1663 1723 458.7
D 12 188 4834982 11419.43 1383 1432 423.3
D 1 4 198203 464.88 1383 1432 423.3
D 13 73 25155 56.05 1383 1432 423.3

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