ASTROSAT CZTI

Data Quality Report

Orbit 36736

Creation date: 2024-06-27T21:30:57.934779
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/AS1A11_101T01_9000005238_36736cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36736cztM0_level2_quad_clean.evt
Size (bytes)460,416,96086,224,320
Size439.1 MB 82.2 MB
Events in quadrant A2,649,163578,248
Events in quadrant B3,242,542570,335
Events in quadrant C3,631,685566,775
Events in quadrant D4,056,342520,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114503
B0132142
C0141832
D0158792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5356180.336072%
B53562594.835698%
C53561963.659447%
D53565049.410007%

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 7148 5357 7 7 0.10% 0.13%
B 7148 5357 174 174 2.43% 3.25%
C 7148 5357 146 146 2.04% 2.73%
D 7148 5357 473 473 6.62% 8.83%

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 213984 1713.24 612 600 124.6
A 7 3 30392 239.2 612 600 124.6
A 9 143 25542 200.26 612 600 124.6
B 5 200 515604 4453.32 599 584 115.6
B 4 171 70217 602.11 599 584 115.6
B 0 221 65057 557.49 599 584 115.6
C 14 254 544210 3931.49 591 595 138.3
C 0 10 491327 3549.03 591 595 138.3
C 15 214 221406 1596.93 591 595 138.3
D 12 227 1250636 8925.52 573 557 140.1
D 2 250 171349 1219.45 573 557 140.1
D 13 249 147152 1046.68 573 557 140.1

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