ASTROSAT CZTI

Data Quality Report

Orbit 40853

Creation date: 2024-06-27T22:21:21.492263
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_104T02_9000005572_40853cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40853cztM0_level2_quad_clean.evt
Size (bytes)356,330,88081,025,920
Size339.8 MB 77.3 MB
Events in quadrant A2,601,839555,607
Events in quadrant B2,220,439576,936
Events in quadrant C2,722,779538,011
Events in quadrant D5,271,165445,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106093
B099012
C0110342
D0190282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4801140.291606%
B4801160.333264%
C4801982.041241%
D480167914.142887%

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 6954 4802 8 8 0.12% 0.17%
B 6954 4802 5 5 0.07% 0.10%
C 6954 4802 87 87 1.25% 1.81%
D 6954 4802 853 853 12.27% 17.76%

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 445915 4040.85 536 527 110.2
A 2 79 41940 375.73 536 527 110.2
A 12 189 28056 249.76 536 527 110.2
B 4 171 105036 1002.44 538 525 104.3
B 12 111 13148 121.08 538 525 104.3
B 11 111 12184 111.83 538 525 104.3
C 14 254 291402 2406.24 520 525 120.9
C 15 214 205341 1694.31 520 525 120.9
C 0 10 135045 1112.8 520 525 120.9
D 12 79 3146703 25334.71 500 486 124.2
D 2 249 87651 701.89 500 486 124.2
D 13 249 56189 448.54 500 486 124.2

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