ASTROSAT CZTI

Data Quality Report

Orbit 27149

Creation date: 2024-06-27T19:37:00.590370
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_245T01_9000003916_27149cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27149cztM0_level2_quad_clean.evt
Size (bytes)562,855,680101,629,440
Size536.8 MB 96.9 MB
Events in quadrant A3,475,434666,807
Events in quadrant B3,486,952677,958
Events in quadrant C3,391,937649,257
Events in quadrant D6,227,661606,205

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145990
B0144010
C0143400
D0230610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6855630.919037%
B6854540.787861%
C68541111.619492%
D68546189.016633%

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 7730 6856 8 8 0.10% 0.12%
B 7729 6855 1 1 0.01% 0.01%
C 7729 6855 2 2 0.03% 0.03%
D 7729 6855 496 496 6.42% 7.24%

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 14 235 117840 674.59 861 843 173.4
A 0 13 11978 64.2 861 843 173.4
A 8 192 11263 60.08 861 843 173.4
B 3 112 92318 556.58 853 830 164.4
B 0 190 35137 208.71 853 830 164.4
B 12 111 20338 118.68 853 830 164.4
C 14 238 131772 673.43 823 828 194.4
C 15 208 51021 258.14 823 828 194.4
C 2 16 6752 30.47 823 828 194.4
D 1 52 2733634 13472.63 806 787 202.8
D 7 38 217931 1070.5 806 787 202.8
D 12 233 96686 472.77 806 787 202.8

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