ASTROSAT CZTI

Data Quality Report

Orbit 48217

Creation date: 2024-08-28T02:21:05.028854
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/AS1C09_004T05_9000006416_48217cztM0_level2.fits modeM0/AS1C09_004T05_9000006416_48217cztM0_level2_quad_clean.evt
Size (bytes)608,656,320105,330,240
Size580.5 MB 100.5 MB
Events in quadrant A7,570,500706,415
Events in quadrant B5,895,609713,719
Events in quadrant C3,021,907693,805
Events in quadrant D5,535,421616,824

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270291
B0222651
C0139671
D0210981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65642904.418038%
B65652533.853770%
C6565711.081493%
D65643034.616088%

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 7424 6565 84 84 1.13% 1.28%
B 7425 6566 125 125 1.68% 1.90%
C 7425 6566 49 49 0.66% 0.75%
D 7424 6565 303 303 4.08% 4.62%

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 4530354 31542.34 697 682 143.6
A 14 235 164334 1139.59 697 682 143.6
A 13 248 61454 423.19 697 682 143.6
B 10 7 1913097 14040.39 698 677 136.2
B 0 200 452293 3315.62 698 677 136.2
B 4 21 381628 2796.82 698 677 136.2
C 14 254 143992 881.77 697 701 162.5
C 12 2 100937 616.82 697 701 162.5
C 1 3 26888 161.15 697 701 162.5
D 2 165 1492188 8747.44 686 664 170.5
D 12 128 592053 3468.36 686 664 170.5
D 4 222 325391 1904.45 686 664 170.5

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