ASTROSAT CZTI

Data Quality Report

Orbit 27514

Creation date: 2024-06-27T19:40:51.166153
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/AS1T03_249T01_9000003934_27514cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27514cztM0_level2_quad_clean.evt
Size (bytes)480,726,720102,556,800
Size458.5 MB 97.8 MB
Events in quadrant A3,058,833686,908
Events in quadrant B3,168,005700,613
Events in quadrant C3,090,975660,126
Events in quadrant D4,820,017625,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130740
B0134270
C0131620
D0185900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6201320.516046%
B6201380.612804%
C6200631.016129%
D62014727.611676%

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 7391 6202 1 1 0.01% 0.02%
B 7391 6201 0 0 0.00% 0.00%
C 7390 6200 0 0 0.00% 0.00%
D 7391 6202 410 410 5.55% 6.61%

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 10654 62.4 791 778 158.3
A 3 137 7431 42.03 791 778 158.3
A 8 192 7198 40.56 791 778 158.3
B 0 230 27082 175.29 792 772 150.1
B 3 64 20522 131.58 792 772 150.1
B 12 111 18100 115.45 792 772 150.1
C 14 238 123296 686.88 760 764 178.4
C 13 61 5259 25.19 760 764 178.4
C 4 224 4088 18.63 760 764 178.4
D 7 80 1275117 7247.1 733 713 175.9
D 1 52 681996 3874.22 733 713 175.9
D 2 250 35495 197.79 733 713 175.9

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