ASTROSAT CZTI

Data Quality Report

Orbit 22972

Creation date: 2024-06-27T18:48:11.002571
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/AS1A07_062T01_9000003392_22972cztM0_level2.evt modeM0/AS1A07_062T01_9000003392_22972cztM0_level2_quad_clean.evt
Size (bytes)453,579,84072,826,560
Size432.6 MB 69.5 MB
Events in quadrant A3,177,743454,316
Events in quadrant B3,293,209464,067
Events in quadrant C3,334,882427,991
Events in quadrant D3,503,232419,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131552
B0135032
C0135873
D0144872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6294290.460756%
B6294420.667302%
C62931041.652630%
D6294751.191611%

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 7639 6295 0 0 0.00% 0.00%
B 7639 6295 1 1 0.01% 0.02%
C 7638 6294 5 5 0.07% 0.08%
D 7639 6295 47 47 0.62% 0.75%

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 13 254 10467 59.15 823 808 163.3
A 0 226 7185 39.05 823 808 163.3
A 3 137 6716 36.18 823 808 163.3
B 0 183 29476 186.04 824 806 154.1
B 12 111 17823 110.43 824 806 154.1
B 0 190 17495 108.3 824 806 154.1
C 14 238 126203 685.81 785 792 182.9
C 0 10 105134 570.6 785 792 182.9
C 0 239 40149 215.22 785 792 182.9
D 13 153 149168 780.92 787 768 190.0
D 1 52 131393 687.38 787 768 190.0
D 12 233 77136 401.87 787 768 190.0

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