ASTROSAT CZTI

Data Quality Report

Orbit 25878

Creation date: 2024-06-27T19:22:22.680965
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_068T01_9000003756_25878cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25878cztM0_level2_quad_clean.evt
Size (bytes)605,658,240111,018,240
Size577.6 MB 105.9 MB
Events in quadrant A5,534,144705,736
Events in quadrant B3,645,887769,861
Events in quadrant C3,401,092731,115
Events in quadrant D5,333,101713,685

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206150
B0149280
C0141840
D0203550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A632875911.994311%
B63291452.291041%
C63281211.912137%
D63264577.224154%

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 7465 6330 555 555 7.43% 8.77%
B 7465 6331 43 43 0.58% 0.68%
C 7465 6330 2 2 0.03% 0.03%
D 7465 6329 379 379 5.08% 5.99%

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 0 13 2514516 15957.58 783 769 157.5
A 13 254 9315 54.25 783 769 157.5
A 3 137 7033 39.76 783 769 157.5
B 10 245 437580 2829.9 809 790 154.3
B 12 111 18595 115.35 809 790 154.3
B 11 111 16908 104.42 809 790 154.3
C 3 233 227476 1252.5 781 788 181.0
C 14 238 129057 708.71 781 788 181.0
C 13 61 5499 26.03 781 788 181.0
D 7 80 1392416 7393.42 787 769 188.2
D 7 223 442474 2346.65 787 769 188.2
D 12 233 409243 2170.1 787 769 188.2

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