ASTROSAT CZTI

Data Quality Report

Orbit 19915

Creation date: 2024-06-27T18:08:43.127826
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/AS1A05_064T01_9000002964_19915cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19915cztM0_level2_quad_clean.evt
Size (bytes)790,338,24099,250,560
Size753.7 MB 94.7 MB
Events in quadrant A2,750,738723,447
Events in quadrant B5,548,218698,789
Events in quadrant C4,639,441682,814
Events in quadrant D10,613,060500,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119551
B0205371
C0177731
D0354631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5704460.806452%
B57052694.715162%
C57054507.887818%
D5704273848.001403%

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 6944 5704 0 0 0.00% 0.00%
B 6945 5705 117 117 1.68% 2.05%
C 6945 5705 211 211 3.04% 3.70%
D 6943 5703 2790 2790 40.18% 48.92%

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 5 16 9850 64.79 712 698 141.3
A 0 226 6545 41.39 712 698 141.3
A 12 194 5345 32.9 712 698 141.3
B 3 112 2303460 17812.08 700 684 129.3
B 7 220 308116 2378.0 700 684 129.3
B 0 190 67050 513.34 700 684 129.3
C 9 221 965395 6169.04 677 682 156.4
C 4 254 802884 5129.84 677 682 156.4
C 14 238 105926 673.0 677 682 156.4
D 7 38 3072614 22341.56 567 550 137.5
D 2 184 2537456 18449.63 567 550 137.5
D 1 52 1393220 10128.18 567 550 137.5

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