ASTROSAT CZTI

Data Quality Report

Orbit 41880

Creation date: 2024-06-27T22:33:57.704167
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_124T01_9000005712_41880cztM0_level2.fits modeM0/AS1T05_124T01_9000005712_41880cztM0_level2_quad_clean.evt
Size (bytes)356,328,00088,974,720
Size339.8 MB 84.9 MB
Events in quadrant A4,106,935594,292
Events in quadrant B2,484,726639,934
Events in quadrant C3,216,160559,653
Events in quadrant D2,986,015543,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01051
C01050
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01557194
B01064629
C01251746
D01229928

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50833567.003738%
B5091100.196425%
C50832504.918355%
D50961092.138932%

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 7203 5105 231 231 3.21% 4.52%
B 7203 5104 4 4 0.06% 0.08%
C 7204 5102 247 247 3.43% 4.84%
D 7204 5107 102 102 1.42% 2.00%

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 24 1287980 10870.37 583 572 118.4
A 10 83 477662 4028.36 583 572 118.4
A 7 3 84021 704.61 583 572 118.4
B 0 156 100299 874.12 591 576 114.1
B 3 112 38451 331.99 591 576 114.1
B 0 245 23098 197.42 591 576 114.1
C 0 10 735291 5731.35 551 555 128.2
C 15 214 200979 1563.42 551 555 128.2
C 14 254 129437 1005.35 551 555 128.2
D 12 6 462892 3314.78 571 557 139.5
D 13 249 145939 1042.34 571 557 139.5
D 5 222 99807 711.58 571 557 139.5

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