ASTROSAT CZTI

Data Quality Report

Orbit 42129

Creation date: 2024-06-27T22:37:19.364153
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/AS1A12_088T19_9000005754_42129cztM0_level2.fits modeM0/AS1A12_088T19_9000005754_42129cztM0_level2_quad_clean.evt
Size (bytes)302,235,84082,560,960
Size288.2 MB 78.7 MB
Events in quadrant A2,649,001564,198
Events in quadrant B2,222,029580,748
Events in quadrant C2,331,179547,885
Events in quadrant D3,597,734458,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108252
B0100702
C0100012
D0143622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497180.160933%
B497190.181050%
C497130.060350%
D49714629.293905%

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 6974 4972 2 2 0.03% 0.04%
B 6974 4972 1 1 0.01% 0.02%
C 6974 4972 0 0 0.00% 0.00%
D 6974 4972 406 406 5.82% 8.17%

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 10 83 499773 4317.62 555 543 115.6
A 3 137 6123 48.26 555 543 115.6
A 13 254 5704 44.64 555 543 115.6
B 3 112 18197 162.34 554 538 108.8
B 12 111 13884 122.69 554 538 108.8
B 11 111 12906 113.7 554 538 108.8
C 15 214 207937 1620.47 543 545 128.0
C 13 61 3639 24.18 543 545 128.0
C 8 79 3217 20.88 543 545 128.0
D 13 249 835204 6546.97 513 497 127.5
D 12 6 321671 2519.11 513 497 127.5
D 2 249 242130 1895.23 513 497 127.5

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