ASTROSAT CZTI

Data Quality Report

Orbit 45926

Creation date: 2024-06-27T23:17:47.920738
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/AS1A13_071T03_9000006142_45926cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45926cztM0_level2_quad_clean.evt
Size (bytes)563,273,280101,560,320
Size537.2 MB 96.9 MB
Events in quadrant A5,628,809679,731
Events in quadrant B6,934,065638,242
Events in quadrant C3,285,074688,070
Events in quadrant D4,500,138616,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209671
B0250611
C0144711
D0178011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64891702.619818%
B648995114.655571%
C64891081.664355%
D64902453.775039%

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 7184 6490 3 3 0.04% 0.05%
B 7184 6490 554 554 7.71% 8.54%
C 7184 6490 61 61 0.85% 0.94%
D 7185 6491 171 171 2.38% 2.63%

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 2735782 18220.42 716 698 150.1
A 0 247 105630 699.03 716 698 150.1
A 0 226 11308 70.68 716 698 150.1
B 3 112 2824191 20700.91 690 668 136.4
B 10 246 1271784 9319.3 690 668 136.4
B 4 158 25918 185.12 690 668 136.4
C 14 254 471191 2785.94 716 719 168.9
C 12 249 10763 59.48 716 719 168.9
C 3 233 9908 54.41 716 719 168.9
D 11 241 675526 3849.53 709 688 175.3
D 13 249 326280 1857.3 709 688 175.3
D 5 171 160831 913.52 709 688 175.3

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