ASTROSAT CZTI

Data Quality Report

Orbit 31035

Creation date: 2024-06-27T20:22:33.922574
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/AS1A10_071T56_9000004484_31035cztM0_level2.evt modeM0/AS1A10_071T56_9000004484_31035cztM0_level2_quad_clean.evt
Size (bytes)559,638,72095,676,480
Size533.7 MB 91.2 MB
Events in quadrant A3,407,695641,350
Events in quadrant B5,396,516637,992
Events in quadrant C3,474,878606,142
Events in quadrant D4,252,332581,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138082
B0199883
C0139772
D0166962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6167570.924274%
B61662353.811223%
C61661742.821927%
D6166791.281220%

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 7552 6167 13 13 0.17% 0.21%
B 7551 6166 95 95 1.26% 1.54%
C 7551 6166 41 41 0.54% 0.66%
D 7551 6167 40 40 0.53% 0.65%

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 11 47 113065 674.71 838 825 166.4
A 0 13 60520 358.85 838 825 166.4
A 13 254 12566 70.58 838 825 166.4
B 6 159 1741314 11323.56 825 806 153.7
B 5 172 274350 1779.65 825 806 153.7
B 0 190 64840 416.6 825 806 153.7
C 0 10 186295 996.56 792 799 186.1
C 14 238 130532 696.98 792 799 186.1
C 3 233 35509 186.48 792 799 186.1
D 8 195 557905 2956.55 791 770 188.4
D 13 174 545715 2891.87 791 770 188.4
D 13 249 60522 317.08 791 770 188.4

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