ASTROSAT CZTI

Data Quality Report

Orbit 01180

Creation date: 2024-06-27T14:08:45.497762
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_997T02_9000000218_01180cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01180cztM0_level2_quad_clean.evt
Size (bytes)1,388,050,56094,777,920
Size1.3 GB 90.4 MB
Events in quadrant A8,085,224640,432
Events in quadrant B8,111,209643,104
Events in quadrant C7,945,605626,788
Events in quadrant D17,456,613494,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287662
B0288271
C0283421
D0571271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6653821.232527%
B6653200.300616%
C6653110.165339%
D6653367855.283331%

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 7332 6653 296 296 4.04% 4.45%
B 7333 6654 185 185 2.52% 2.78%
C 7333 6654 172 172 2.35% 2.58%
D 7333 6654 5396 5396 73.59% 81.09%

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 12 243 277761 572.37 2002 2016 481.8
A 4 32 79552 160.94 2002 2016 481.8
A 15 223 35185 68.85 2002 2016 481.8
B 6 53 41199 78.73 2100 2106 496.5
B 7 221 21564 39.19 2100 2106 496.5
B 0 230 20091 36.22 2100 2106 496.5
C 15 241 336587 619.92 1933 2006 539.7
C 3 111 22906 38.72 1933 2006 539.7
C 9 52 17900 29.45 1933 2006 539.7
D 1 239 10509433 20570.8 1652 1705 510.8
D 10 84 382677 745.82 1652 1705 510.8
D 2 152 285869 556.3 1652 1705 510.8

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