ASTROSAT CZTI

Data Quality Report

Orbit 42919

Creation date: 2024-06-27T22:45:48.058290
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_143T01_9000005830_42919cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42919cztM0_level2_quad_clean.evt
Size (bytes)391,573,44091,362,240
Size373.4 MB 87.1 MB
Events in quadrant A3,594,467620,984
Events in quadrant B3,497,423639,499
Events in quadrant C2,738,699592,428
Events in quadrant D4,233,068525,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140412
B0141912
C0116462
D0163662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55421342.417900%
B5542561.010466%
C5542270.487189%
D55423987.181523%

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 7275 5543 105 105 1.44% 1.89%
B 7275 5543 22 22 0.30% 0.40%
C 7275 5543 26 26 0.36% 0.47%
D 7274 5541 385 385 5.29% 6.95%

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 602433 4791.2 610 596 125.6
A 15 237 473643 3765.91 610 596 125.6
A 15 222 88129 696.85 610 596 125.6
B 4 81 990526 8427.0 607 590 117.5
B 5 255 61421 517.83 607 590 117.5
B 3 112 17836 146.81 607 590 117.5
C 15 214 229323 1660.35 592 596 137.8
C 14 254 151976 1098.88 592 596 137.8
C 12 2 19882 140.0 592 596 137.8
D 1 47 494398 3474.04 582 566 142.1
D 13 249 357088 2508.08 582 566 142.1
D 12 233 310285 2178.83 582 566 142.1

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