ASTROSAT CZTI

Data Quality Report

Orbit 46660

Creation date: 2024-06-27T23:26:02.449980
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/AS1A13_039T01_9000006246_46660cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46660cztM0_level2_quad_clean.evt
Size (bytes)465,624,000101,494,080
Size444.1 MB 96.8 MB
Events in quadrant A6,307,116661,731
Events in quadrant B3,650,170686,816
Events in quadrant C3,287,903669,247
Events in quadrant D3,501,551615,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229051
B0152791
C0144191
D0150111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63032143.395209%
B63031322.094241%
C6304791.253173%
D6304791.253173%

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 7353 6304 130 130 1.77% 2.06%
B 7353 6304 57 57 0.78% 0.90%
C 7354 6305 83 83 1.13% 1.32%
D 7354 6305 39 39 0.53% 0.62%

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 3473150 25094.9 664 650 138.4
A 15 235 154615 1112.67 664 650 138.4
A 13 248 63158 451.73 664 650 138.4
B 0 189 412235 3158.31 671 652 130.3
B 12 3 135778 1036.9 671 652 130.3
B 4 171 101590 774.55 671 652 130.3
C 9 54 528740 3395.06 666 670 155.5
C 12 250 39285 248.26 666 670 155.5
C 12 249 35357 223.01 666 670 155.5
D 12 128 310115 1868.03 665 643 165.7
D 1 52 220958 1329.86 665 643 165.7
D 12 1 99286 595.43 665 643 165.7

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