ASTROSAT CZTI

Data Quality Report

Orbit 21873

Creation date: 2024-06-27T18:33:18.014241
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_118T01_9000003232_21873cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21873cztM0_level2_quad_clean.evt
Size (bytes)462,712,32089,245,440
Size441.3 MB 85.1 MB
Events in quadrant A3,165,366566,806
Events in quadrant B3,369,923585,612
Events in quadrant C3,188,669561,052
Events in quadrant D3,846,370534,347

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136202
B0140482
C0135192
D0156852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6529350.536070%
B6529650.995558%
C6529600.918977%
D65291632.496554%

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 7574 6530 0 0 0.00% 0.00%
B 7574 6530 14 14 0.18% 0.21%
C 7574 6530 0 0 0.00% 0.00%
D 7574 6530 130 130 1.72% 1.99%

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 2 79 14116 80.77 814 800 164.9
A 13 254 11333 63.89 814 800 164.9
A 4 2 8748 48.21 814 800 164.9
B 3 64 81339 512.76 820 799 157.1
B 0 190 28050 173.49 820 799 157.1
B 12 111 18567 113.12 820 799 157.1
C 14 238 123197 668.2 784 791 183.2
C 0 10 7322 35.65 784 791 183.2
C 13 61 5653 26.54 784 791 183.2
D 1 52 623626 3302.83 779 759 188.6
D 7 238 108646 572.08 779 759 188.6
D 12 227 59983 314.04 779 759 188.6

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