ASTROSAT CZTI

Data Quality Report

Orbit 20419

Creation date: 2024-06-27T18:15:11.194626
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_188T01_9000003018_20419cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20419cztM0_level2_quad_clean.evt
Size (bytes)355,438,08059,889,600
Size339.0 MB 57.1 MB
Events in quadrant A2,259,146383,654
Events in quadrant B2,244,389391,128
Events in quadrant C2,210,731369,365
Events in quadrant D3,739,605348,468

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096302
B095991
C094181
D0141751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4564240.525855%
B4564260.569676%
C4564360.788782%
D45643026.617003%

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 5674 4565 8 8 0.14% 0.18%
B 5674 4564 0 0 0.00% 0.00%
C 5674 4565 4 4 0.07% 0.09%
D 5674 4565 245 245 4.32% 5.37%

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 46022 402.54 565 554 113.0
A 12 96 32290 280.97 565 554 113.0
A 0 226 5000 39.36 565 554 113.0
B 0 189 13765 123.95 561 548 106.6
B 12 111 12891 115.75 561 548 106.6
B 10 245 11944 106.87 561 548 106.6
C 14 238 84906 668.06 538 540 126.3
C 3 9 10403 78.1 538 540 126.3
C 3 233 10153 76.12 538 540 126.3
D 2 16 1456476 11201.03 534 516 130.0
D 1 52 154539 1184.93 534 516 130.0
D 13 153 93378 714.41 534 516 130.0

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