ASTROSAT CZTI

Data Quality Report

Orbit 19991

Creation date: 2024-06-27T18:09:47.336561
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/AS1A06_002T02_9000002982_19991cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19991cztM0_level2_quad_clean.evt
Size (bytes)490,553,28092,376,000
Size467.8 MB 88.1 MB
Events in quadrant A3,837,749592,072
Events in quadrant B3,711,603603,569
Events in quadrant C3,397,448580,572
Events in quadrant D3,477,231576,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153832
B0153292
C0139482
D0144242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63661752.748979%
B63661271.994973%
C63661382.167766%
D6366891.398052%

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 7506 6366 116 116 1.55% 1.82%
B 7506 6366 27 27 0.36% 0.42%
C 7505 6365 0 0 0.00% 0.00%
D 7506 6366 21 21 0.28% 0.33%

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 14 238 561225 3341.11 835 819 167.7
A 14 254 59143 347.72 835 819 167.7
A 0 226 7272 38.47 835 819 167.7
B 0 197 155907 985.37 834 816 157.4
B 7 220 130650 824.9 834 816 157.4
B 0 190 77722 488.62 834 816 157.4
C 14 238 129005 684.87 811 818 187.2
C 0 207 61055 321.83 811 818 187.2
C 3 233 33491 174.56 811 818 187.2
D 1 52 214390 1069.96 826 805 199.6
D 12 227 75226 372.81 826 805 199.6
D 2 234 27070 131.58 826 805 199.6

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