ASTROSAT CZTI

Data Quality Report

Orbit 27645

Creation date: 2024-06-27T19:42:31.485637
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/AS1T03_257T01_9000003976_27645cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27645cztM0_level2_quad_clean.evt
Size (bytes)548,700,48094,222,080
Size523.3 MB 89.9 MB
Events in quadrant A3,282,923635,968
Events in quadrant B3,490,761654,694
Events in quadrant C3,211,514614,249
Events in quadrant D6,208,692512,017

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138120
B0143950
C0134660
D0226410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244410.656630%
B6244620.992953%
C6244781.249199%
D6244100816.143498%

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 7490 6244 8 8 0.11% 0.13%
B 7490 6244 13 13 0.17% 0.21%
C 7490 6244 4 4 0.05% 0.06%
D 7490 6244 882 882 11.78% 14.13%

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 6 16 154046 952.55 808 793 160.9
A 8 192 12428 72.32 808 793 160.9
A 13 254 11060 63.81 808 793 160.9
B 5 255 104750 693.3 808 788 150.0
B 0 230 104198 689.62 808 788 150.0
B 10 245 67112 442.3 808 788 150.0
C 14 238 126154 690.28 779 785 181.6
C 0 207 20801 110.21 779 785 181.6
C 2 16 19958 105.56 779 785 181.6
D 1 52 2177526 12809.28 723 707 169.9
D 2 250 644646 3789.2 723 707 169.9
D 7 80 312526 1834.87 723 707 169.9

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