ASTROSAT CZTI

Data Quality Report

Orbit 36979

Creation date: 2024-06-27T21:33:50.667442
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/AS1A11_079T01_9000005254_36979cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36979cztM0_level2_quad_clean.evt
Size (bytes)1,570,844,160176,633,280
Size1.5 GB 168.5 MB
Events in quadrant A7,284,6561,122,206
Events in quadrant B19,477,7811,032,409
Events in quadrant C7,807,8251,125,117
Events in quadrant D11,973,9481,013,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313234
B0682773
C0321903
D0460823

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15275250.163666%
B15275358423.463175%
C15275590.386252%
D15275154210.094926%

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 19574 15278 4 4 0.02% 0.03%
B 19574 15278 2884 2884 14.73% 18.88%
C 19574 15278 43 43 0.22% 0.28%
D 19574 15278 1435 1435 7.33% 9.39%

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 473062 1346.87 1740 1703 350.0
A 9 143 72259 201.61 1740 1703 350.0
A 13 254 19360 50.45 1740 1703 350.0
B 5 184 11861681 37842.21 1649 1605 313.4
B 4 81 646033 2056.19 1649 1605 313.4
B 0 221 216566 685.88 1649 1605 313.4
C 15 214 643958 1621.11 1701 1713 396.2
C 0 10 293826 737.33 1701 1713 396.2
C 14 254 169855 424.41 1701 1713 396.2
D 12 17 4247138 10766.43 1614 1567 394.3
D 13 171 725579 1836.04 1614 1567 394.3
D 2 250 431194 1089.5 1614 1567 394.3

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