ASTROSAT CZTI

Data Quality Report

Orbit 12855

Creation date: 2024-06-27T16:33:11.102650
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/AS1G08_071T01_9000001888_12855cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12855cztM0_level2_quad_clean.evt
Size (bytes)213,396,48031,481,280
Size203.5 MB 30.0 MB
Events in quadrant A1,390,085197,680
Events in quadrant B2,060,493177,600
Events in quadrant C1,329,390194,504
Events in quadrant D1,493,546185,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058011
B078451
C056251
D062001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A275880.290065%
B275829210.587382%
C275840.145033%
D2758371.341552%

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 2758 2758 0 0 0.00% 0.00%
B 2758 2758 193 193 7.00% 7.00%
C 2758 2758 0 0 0.00% 0.00%
D 2758 2758 32 32 1.16% 1.16%

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 16897 231.35 350 343 71.6
A 8 15 12996 176.83 350 343 71.6
A 3 9 9212 123.95 350 343 71.6
B 4 239 709228 11559.31 327 320 61.3
B 0 219 19661 315.37 327 320 61.3
B 0 85 17660 282.74 327 320 61.3
C 13 61 2501 27.44 340 342 78.7
C 14 234 1842 19.06 340 342 78.7
C 3 202 895 7.03 340 342 78.7
D 1 52 202417 2467.22 339 329 81.9
D 2 234 9141 107.58 339 329 81.9
D 13 104 4508 51.02 339 329 81.9

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