ASTROSAT CZTI

Data Quality Report

Orbit 19280

Creation date: 2024-06-27T18:01:00.122250
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/AS1A05_107T01_9000002852_19280cztM0_level2.evt modeM0/AS1A05_107T01_9000002852_19280cztM0_level2_quad_clean.evt
Size (bytes)476,297,280101,998,080
Size454.2 MB 97.3 MB
Events in quadrant A3,363,014663,979
Events in quadrant B3,449,472680,927
Events in quadrant C3,596,975664,726
Events in quadrant D3,596,838649,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140512
B0143052
C0147872
D0149132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61601001.623377%
B61611201.947736%
C61611742.824217%
D61611492.418439%

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 8850 6161 0 0 0.00% 0.00%
B 8851 6162 1 1 0.01% 0.02%
C 8851 6161 1 1 0.01% 0.02%
D 8851 6162 39 39 0.44% 0.63%

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 13 254 9363 49.3 869 854 172.6
A 4 2 8529 44.47 869 854 172.6
A 0 226 7549 38.79 869 854 172.6
B 12 111 18555 108.73 871 850 162.8
B 0 190 16732 97.53 871 850 162.8
B 11 111 16348 95.18 871 850 162.8
C 14 238 136358 690.15 855 865 196.3
C 3 233 116418 588.58 855 865 196.3
C 9 54 7190 32.22 855 865 196.3
D 13 138 120639 578.24 861 839 207.2
D 7 238 70121 334.4 861 839 207.2
D 10 66 65297 311.12 861 839 207.2

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