ASTROSAT CZTI

Data Quality Report

Orbit 30972

Creation date: 2024-06-27T20:21:47.992839
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/AS1A10_071T42_9000004476_30972cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30972cztM0_level2_quad_clean.evt
Size (bytes)488,571,84084,398,400
Size465.9 MB 80.5 MB
Events in quadrant A2,912,460548,977
Events in quadrant B4,911,247544,870
Events in quadrant C3,184,355522,412
Events in quadrant D3,376,982515,791

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126001
B0186461
C0132931
D0138551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6065430.708986%
B6065971.599340%
C60661472.423343%
D6066520.857237%

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 7130 6065 0 0 0.00% 0.00%
B 7130 6065 2 2 0.03% 0.03%
C 7131 6066 44 44 0.62% 0.73%
D 7131 6066 12 12 0.17% 0.20%

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 13 254 10069 61.3 755 740 152.2
A 3 137 7513 44.5 755 740 152.2
A 0 226 6467 37.63 755 740 152.2
B 6 159 1772391 12385.83 745 726 143.0
B 4 171 73419 508.2 745 726 143.0
B 0 190 32793 224.18 745 726 143.0
C 0 10 216154 1278.45 719 724 168.5
C 14 238 115388 680.46 719 724 168.5
C 15 208 16250 92.14 719 724 168.5
D 8 195 447447 2521.47 734 714 177.2
D 2 250 77752 434.82 734 714 177.2
D 2 234 33772 186.59 734 714 177.2

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