ASTROSAT CZTI

Data Quality Report

Orbit 29822

Creation date: 2024-06-27T20:08:04.282796
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_291T01_9000004278_29822cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29822cztM0_level2_quad_clean.evt
Size (bytes)571,095,360108,221,760
Size544.6 MB 103.2 MB
Events in quadrant A3,484,002716,487
Events in quadrant B5,725,805716,451
Events in quadrant C3,594,767678,340
Events in quadrant D4,001,894663,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149422
B0220952
C0151683
D0164673

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7223230.318427%
B72241492.062569%
C7223881.218330%
D7222430.595403%

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 7654 7225 2 2 0.03% 0.03%
B 7654 7225 2 2 0.03% 0.03%
C 7653 7224 11 11 0.14% 0.15%
D 7653 7224 17 17 0.22% 0.24%

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 12 96 33341 181.91 892 876 178.5
A 13 254 13519 70.84 892 876 178.5
A 3 137 8854 44.7 892 876 178.5
B 6 159 2134706 12777.13 884 865 167.0
B 0 190 81199 481.03 884 865 167.0
B 3 209 27755 161.01 884 865 167.0
C 14 238 139769 692.87 850 855 200.5
C 3 233 73008 359.88 850 855 200.5
C 10 22 29189 141.32 850 855 200.5
D 8 195 551023 2717.28 853 831 202.5
D 2 250 72196 352.46 853 831 202.5
D 13 104 35808 172.74 853 831 202.5

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