ASTROSAT CZTI

Data Quality Report

Orbit 13074

Creation date: 2024-06-27T16:36:14.182113
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/AS1A04_176T02_9000001924_13074cztM0_level2.evt modeM0/AS1A04_176T02_9000001924_13074cztM0_level2_quad_clean.evt
Size (bytes)752,938,56078,840,000
Size718.1 MB 75.2 MB
Events in quadrant A3,931,986480,389
Events in quadrant B6,530,227456,881
Events in quadrant C3,610,089485,913
Events in quadrant D8,216,008435,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167263
B0244412
C0159952
D0295542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75912533.332894%
B7591144519.035700%
C75911411.857463%
D7591206527.203267%

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 7877 7593 39 39 0.50% 0.51%
B 7876 7592 959 959 12.18% 12.63%
C 7877 7593 10 10 0.13% 0.13%
D 7877 7593 1815 1815 23.04% 23.90%

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 15 223 216050 1154.57 910 888 186.4
A 15 239 102924 547.53 910 888 186.4
A 8 15 37360 195.71 910 888 186.4
B 4 239 2753034 17390.65 813 793 158.3
B 0 85 558186 3522.01 813 793 158.3
B 12 111 18539 112.13 813 793 158.3
C 15 208 114391 549.93 886 891 206.4
C 14 234 27105 127.01 886 891 206.4
C 0 207 11202 49.96 886 891 206.4
D 1 52 4942598 26252.28 774 751 188.2
D 10 157 180379 954.23 774 751 188.2
D 13 172 99886 526.63 774 751 188.2

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