ASTROSAT CZTI

Data Quality Report

Orbit 18260

Creation date: 2024-06-27T17:47:30.972131
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/AS1A05_019T01_9000002718_18260cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18260cztM0_level2_quad_clean.evt
Size (bytes)942,955,200168,814,080
Size899.3 MB 161.0 MB
Events in quadrant A7,028,5781,082,041
Events in quadrant B6,320,5581,097,994
Events in quadrant C6,153,1971,034,996
Events in quadrant D8,174,443998,209

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296353
B0273243
C0268093
D0331263

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130062491.914501%
B130071070.822634%
C130071240.953333%
D130077025.397094%

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 14621 13009 139 139 0.95% 1.07%
B 14622 13010 13 13 0.09% 0.10%
C 14622 13010 8 8 0.05% 0.06%
D 14622 13010 496 496 3.39% 3.81%

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 15 174 1062394 3407.75 1540 1505 311.3
A 4 2 44339 137.59 1540 1505 311.3
A 0 226 13252 37.73 1540 1505 311.3
B 7 220 152530 502.25 1549 1505 300.7
B 0 197 39193 125.34 1549 1505 300.7
B 12 111 35893 114.36 1549 1505 300.7
C 14 238 230668 660.14 1483 1490 347.2
C 0 207 103673 294.34 1483 1490 347.2
C 3 233 33544 92.33 1483 1490 347.2
D 1 52 1730406 4789.15 1480 1436 361.0
D 7 238 724155 2001.89 1480 1436 361.0
D 2 234 53948 145.45 1480 1436 361.0

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