ASTROSAT CZTI

Data Quality Report

Orbit 07309

Creation date: 2024-06-27T15:18:19.058422
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/AS1G06_137T02_9000001002_07309cztM0_level2.evt modeM0/AS1G06_137T02_9000001002_07309cztM0_level2_quad_clean.evt
Size (bytes)520,646,40096,739,200
Size496.5 MB 92.3 MB
Events in quadrant A4,690,538562,231
Events in quadrant B3,443,591661,049
Events in quadrant C3,210,040644,373
Events in quadrant D3,974,885600,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184123
B0146802
C0139482
D0162682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A661267810.254083%
B6612961.451906%
C6612681.028433%
D66122253.402904%

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 9253 6614 590 590 6.38% 8.92%
B 9253 6614 2 2 0.02% 0.03%
C 9253 6614 9 9 0.10% 0.14%
D 9253 6613 106 106 1.15% 1.60%

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 15 234 1543395 9932.54 766 751 155.3
A 8 15 145466 931.77 766 751 155.3
A 13 170 40080 253.23 766 751 155.3
B 0 214 82935 516.53 838 819 159.0
B 4 81 76046 473.19 838 819 159.0
B 12 111 15885 94.77 838 819 159.0
C 10 22 38527 201.83 811 816 186.8
C 13 61 6227 28.96 811 816 186.8
C 9 68 4629 20.41 811 816 186.8
D 2 216 468106 2401.33 791 768 194.6
D 1 52 172725 883.57 791 768 194.6
D 14 34 98417 501.75 791 768 194.6

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