ASTROSAT CZTI

Data Quality Report

Orbit 38854

Creation date: 2024-06-27T21:57:17.319556
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/AS1A12_077T06_9000005408_38854cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38854cztM0_level2_quad_clean.evt
Size (bytes)331,917,12088,551,360
Size316.5 MB 84.4 MB
Events in quadrant A2,551,757602,598
Events in quadrant B2,541,383622,230
Events in quadrant C2,375,943597,924
Events in quadrant D4,435,948515,321

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106153
B0108482
C0100172
D0165642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489680.163399%
B4896390.796569%
C489680.163399%
D48963747.638889%

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 7049 4897 6 6 0.09% 0.12%
B 7049 4897 11 11 0.16% 0.22%
C 7049 4897 3 3 0.04% 0.06%
D 7049 4897 296 296 4.20% 6.04%

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 374636 3310.45 558 548 113.0
A 7 3 13285 112.71 558 548 113.0
A 13 254 8129 67.09 558 548 113.0
B 4 171 259716 2427.07 559 545 106.8
B 5 184 50877 471.35 559 545 106.8
B 5 172 17158 155.58 559 545 106.8
C 15 214 205074 1610.89 549 553 127.0
C 0 10 9455 70.12 549 553 127.0
C 1 23 5937 42.41 549 553 127.0
D 12 227 930799 7205.51 525 510 129.1
D 2 250 819564 6343.94 525 510 129.1
D 13 249 233557 1805.05 525 510 129.1

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