ASTROSAT CZTI

Data Quality Report

Orbit 20240122_A13_044T02_9000006038_level2

Creation date: 2024-01-25T12:06:34.570716
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/AS1A13_044T02_9000006038cztM0_level2.fits modeM0/AS1A13_044T02_9000006038cztM0_level2_quad_clean.evt
Size (bytes)195,333,120183,983,040
Size186.3 MB 175.5 MB
Events in quadrant A1,184,6761,156,134
Events in quadrant B1,155,5321,176,668
Events in quadrant C1,189,4721,091,548
Events in quadrant D802,436567,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0752100
B0534530
C0502770
D01246840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229454992.174766%
B229444251.852336%
C229442681.168061%
D22945932640.645021%

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 23905 22945 0 0 0.00% 0.00%
B 23905 22944 0 0 0.00% 0.00%
C 23905 22944 0 0 0.00% 0.00%
D 23905 22748 0 0 0.00% 0.00%

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 15 236 940 8.03 309 288 81.2
A 7 110 901 7.55 309 288 81.2
A 0 29 891 7.43 309 288 81.2
B 2 9 1052 12.19 305 290 62.5
B 2 8 849 8.94 305 290 62.5
B 3 17 829 8.62 305 290 62.5
C 1 81 950 7.92 315 292 83.0
C 1 80 924 7.61 315 292 83.0
C 3 158 862 6.86 315 292 83.0
D 8 176 741 8.08 230 209 65.8
D 6 67 594 5.85 230 209 65.8
D 8 160 588 5.76 230 209 65.8

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