ASTROSAT CZTI

Data Quality Report

Orbit 21801

Creation date: 2024-06-27T18:32:24.445404
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_006T02_9000003228_21801cztM0_level2.evt modeM0/AS1A07_006T02_9000003228_21801cztM0_level2_quad_clean.evt
Size (bytes)471,107,52069,923,520
Size449.3 MB 66.7 MB
Events in quadrant A3,339,304417,438
Events in quadrant B3,627,966423,993
Events in quadrant C3,263,822411,604
Events in quadrant D3,580,463396,050

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140322
B0147792
C0137322
D0150062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6713380.566066%
B67131191.772680%
C6713831.236407%
D67141121.668156%

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 7673 6714 1 1 0.01% 0.01%
B 7673 6714 49 49 0.64% 0.73%
C 7673 6713 0 0 0.00% 0.00%
D 7674 6715 66 66 0.86% 0.98%

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 6 16 126966 755.63 832 814 166.9
A 13 254 12498 69.98 832 814 166.9
A 0 226 7251 38.55 832 814 166.9
B 3 64 262395 1647.54 837 820 158.8
B 0 190 39955 246.49 837 820 158.8
B 0 197 22496 136.53 837 820 158.8
C 14 238 125913 662.99 805 813 188.7
C 13 61 5555 25.13 805 813 188.7
C 0 207 2307 7.92 805 813 188.7
D 13 153 173769 880.82 805 783 196.4
D 1 52 129530 655.56 805 783 196.4
D 13 104 84785 427.72 805 783 196.4

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