ASTROSAT CZTI

Data Quality Report

Orbit 41767

Creation date: 2024-06-27T22:32:37.800446
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_044T19_9000005698_41767cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41767cztM0_level2_quad_clean.evt
Size (bytes)328,141,44083,589,120
Size312.9 MB 79.7 MB
Events in quadrant A2,967,045564,877
Events in quadrant B2,519,780576,659
Events in quadrant C3,075,505524,477
Events in quadrant D3,184,633505,592

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118772
B0110422
C0123262
D0130312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5132671.305534%
B5132220.428683%
C51322514.890881%
D51321182.299299%

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 7076 5133 65 65 0.92% 1.27%
B 7075 5131 12 12 0.17% 0.23%
C 7075 5131 239 239 3.38% 4.66%
D 7075 5132 123 123 1.74% 2.40%

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 561681 4830.28 559 548 116.2
A 7 16 108616 930.26 559 548 116.2
A 15 223 79969 683.66 559 548 116.2
B 5 255 104888 966.89 556 541 107.9
B 0 245 79223 729.07 556 541 107.9
B 15 35 34936 318.71 556 541 107.9
C 0 10 786817 6416.28 519 522 122.5
C 15 214 215479 1754.08 519 522 122.5
C 14 254 20255 161.02 519 522 122.5
D 13 249 361858 2724.56 537 522 132.6
D 2 120 197051 1481.88 537 522 132.6
D 2 249 171180 1286.8 537 522 132.6

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