ASTROSAT CZTI

Data Quality Report

Orbit 26551

Creation date: 2024-06-27T19:30:20.725968
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/AS1A09_095T02_9000003840_26551cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26551cztM0_level2_quad_clean.evt
Size (bytes)575,677,440124,729,920
Size549.0 MB 119.0 MB
Events in quadrant A3,776,122830,655
Events in quadrant B4,015,931834,623
Events in quadrant C3,736,045806,078
Events in quadrant D5,393,611780,474

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161420
B0168950
C0158880
D0211650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75611171.547414%
B75622473.266332%
C75621572.076170%
D75615196.864171%

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 8511 7563 8 8 0.09% 0.11%
B 8512 7563 84 84 0.99% 1.11%
C 8512 7564 0 0 0.00% 0.00%
D 8511 7562 351 351 4.12% 4.64%

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 0 13 247928 1356.04 910 893 182.2
A 5 168 21369 112.4 910 893 182.2
A 13 254 12081 61.41 910 893 182.2
B 3 64 333250 1937.78 903 880 171.5
B 5 172 109161 631.3 903 880 171.5
B 3 112 28182 159.18 903 880 171.5
C 3 233 195030 959.49 872 876 202.4
C 14 238 141714 696.01 872 876 202.4
C 13 61 6105 25.84 872 876 202.4
D 1 52 1248076 6085.84 861 839 204.9
D 7 80 550311 2681.12 861 839 204.9
D 2 250 203393 988.35 861 839 204.9

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