ASTROSAT CZTI

Data Quality Report

Orbit 38920

Creation date: 2024-06-27T21:58:10.191837
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/AS1T05_064T01_9000005416_38920cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38920cztM0_level2_quad_clean.evt
Size (bytes)455,973,12090,025,920
Size434.8 MB 85.9 MB
Events in quadrant A3,108,576624,532
Events in quadrant B2,657,056631,543
Events in quadrant C2,633,408606,884
Events in quadrant D8,046,571472,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127693
B0117222
C0113192
D0278212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5577190.340685%
B5577500.896539%
C557750.089654%
D5577111019.903174%

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 7189 5578 5 5 0.07% 0.09%
B 7189 5578 41 41 0.57% 0.74%
C 7189 5578 2 2 0.03% 0.04%
D 7189 5578 1151 1151 16.01% 20.63%

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 440636 3526.76 616 605 124.8
A 12 16 191914 1533.3 616 605 124.8
A 12 194 32359 254.5 616 605 124.8
B 5 200 126620 1081.73 610 593 116.5
B 5 172 61126 519.57 610 593 116.5
B 0 155 29839 251.03 610 593 116.5
C 15 214 229719 1631.5 602 603 140.4
C 12 249 41153 288.75 602 603 140.4
C 15 159 5594 35.54 602 603 140.4
D 12 227 2111799 15303.67 564 547 138.0
D 1 52 1961008 14210.64 564 547 138.0
D 12 235 1040034 7534.85 564 547 138.0

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