ASTROSAT CZTI

Data Quality Report

Orbit 38403

Creation date: 2024-06-27T21:52:17.028745
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_9000005386_38403cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38403cztM0_level2_quad_clean.evt
Size (bytes)327,864,96095,630,400
Size312.7 MB 91.2 MB
Events in quadrant A3,155,128660,079
Events in quadrant B2,672,800671,257
Events in quadrant C2,557,267629,373
Events in quadrant D3,354,189577,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125153
B0110152
C0104762
D0131392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5098721.412319%
B5098280.549235%
C509880.156924%
D50981282.510789%

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 7101 5099 55 55 0.77% 1.08%
B 7101 5099 12 12 0.17% 0.24%
C 7101 5099 3 3 0.04% 0.06%
D 7101 5099 96 96 1.35% 1.88%

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 406214 3325.1 604 592 122.0
A 13 248 271966 2224.6 604 592 122.0
A 12 189 74839 608.64 604 592 122.0
B 0 183 147603 1319.59 597 582 111.4
B 4 232 68619 610.67 597 582 111.4
B 0 230 55639 494.17 597 582 111.4
C 15 214 216887 1601.56 588 592 135.1
C 0 10 13101 92.62 588 592 135.1
C 15 159 11309 79.35 588 592 135.1
D 2 153 241031 1691.09 589 574 142.2
D 12 6 152821 1070.72 589 574 142.2
D 10 118 151443 1061.03 589 574 142.2

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