ASTROSAT CZTI

Data Quality Report

Orbit 43469

Creation date: 2024-06-27T22:52:19.451413
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_018T01_9000005874_43469cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43469cztM0_level2_quad_clean.evt
Size (bytes)759,867,840126,662,400
Size724.7 MB 120.8 MB
Events in quadrant A5,811,022917,733
Events in quadrant B4,299,563944,118
Events in quadrant C4,118,220888,326
Events in quadrant D13,237,900492,580

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227442
B0184242
C0176332
D0451264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85252322.721408%
B8525220.258065%
C8526110.129017%
D8525365242.838710%

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 11631 8527 193 193 1.66% 2.26%
B 11631 8527 10 10 0.09% 0.12%
C 11632 8528 7 7 0.06% 0.08%
D 11631 8527 3607 3607 31.01% 42.30%

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 15 222 906063 4899.2 901 883 184.8
A 10 83 888256 4802.82 901 883 184.8
A 15 237 474068 2561.07 901 883 184.8
B 0 245 283843 1629.66 910 886 173.6
B 0 189 170064 974.36 910 886 173.6
B 3 112 75792 431.41 910 886 173.6
C 15 214 372029 1766.89 894 896 210.0
C 3 233 199577 945.88 894 896 210.0
C 14 254 44961 209.78 894 896 210.0
D 1 52 8854203 54087.82 652 633 163.7
D 2 16 644447 3933.16 652 633 163.7
D 12 233 528741 3226.29 652 633 163.7

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