ASTROSAT CZTI

Data Quality Report

Orbit 11551

Creation date: 2024-06-27T16:14:36.979949
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/AS1G08_009T01_9000001692_11551cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11551cztM0_level2_quad_clean.evt
Size (bytes)595,244,16046,811,520
Size567.7 MB 44.6 MB
Events in quadrant A4,787,092242,077
Events in quadrant B4,218,431250,576
Events in quadrant C3,139,089249,148
Events in quadrant D5,454,664233,958

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186253
B0166572
C0132352
D0203852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63223385.346409%
B63222874.539703%
C6322460.727618%
D63225268.320152%

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 7558 6324 95 95 1.26% 1.50%
B 7558 6324 105 105 1.39% 1.66%
C 7558 6324 0 0 0.00% 0.00%
D 7558 6324 407 407 5.39% 6.44%

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 8 5 1270743 7810.29 816 801 162.6
A 1 162 118605 724.51 816 801 162.6
A 1 178 70051 425.9 816 801 162.6
B 4 239 764862 4959.17 815 796 154.1
B 11 51 126152 813.62 815 796 154.1
B 15 204 69474 445.75 815 796 154.1
C 13 61 5963 27.77 803 807 185.7
C 14 128 4587 20.36 803 807 185.7
C 12 4 3729 15.74 803 807 185.7
D 1 52 1848518 9824.12 784 764 188.1
D 2 120 494588 2625.56 784 764 188.1
D 13 137 44249 231.2 784 764 188.1

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