ASTROSAT CZTI

Data Quality Report

Orbit 12865

Creation date: 2024-06-27T16:33:17.210110
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/AS1A04_048T01_9000001890_12865cztM0_level2.evt modeM0/AS1A04_048T01_9000001890_12865cztM0_level2_quad_clean.evt
Size (bytes)480,450,24083,784,960
Size458.2 MB 79.9 MB
Events in quadrant A3,026,555544,417
Events in quadrant B5,037,316508,089
Events in quadrant C2,906,995549,241
Events in quadrant D3,176,345520,474

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126202
B0188421
C0124091
D0132561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5939741.246001%
B593981613.739687%
C5939570.959758%
D59391031.734299%

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 7105 5941 1 1 0.01% 0.02%
B 7105 5941 486 486 6.84% 8.18%
C 7105 5941 0 0 0.00% 0.00%
D 7105 5941 40 40 0.56% 0.67%

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 12 189 70656 456.75 757 742 153.1
A 15 174 39252 251.59 757 742 153.1
A 8 15 7366 43.27 757 742 153.1
B 4 239 1264191 9576.43 696 679 131.9
B 0 85 442762 3350.64 696 679 131.9
B 3 64 257826 1948.97 696 679 131.9
C 13 61 5341 26.61 745 749 172.5
C 3 202 1874 6.52 745 749 172.5
C 14 234 1728 5.67 745 749 172.5
D 1 52 334318 1910.53 737 717 174.6
D 2 234 22562 125.11 737 717 174.6
D 8 195 16956 93.0 737 717 174.6

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