ASTROSAT CZTI

Data Quality Report

Orbit 28618

Creation date: 2024-06-27T19:54:03.929129
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_045T06_9000004108_28618cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28618cztM0_level2_quad_clean.evt
Size (bytes)549,155,52076,921,920
Size523.7 MB 73.4 MB
Events in quadrant A3,432,995478,598
Events in quadrant B3,774,103484,404
Events in quadrant C3,533,362470,820
Events in quadrant D5,460,045451,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138882
B0149572
C0141662
D0211012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63611121.760729%
B63612013.159881%
C63611372.153749%
D63613195.014935%

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 7566 6361 1 1 0.01% 0.02%
B 7566 6361 54 54 0.71% 0.85%
C 7566 6361 0 0 0.00% 0.00%
D 7566 6361 240 240 3.17% 3.77%

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 11531 60.57 885 870 176.0
A 8 192 8649 44.2 885 870 176.0
A 3 137 8004 40.53 885 870 176.0
B 10 245 328643 2018.38 863 845 162.4
B 12 111 19365 114.03 863 845 162.4
B 11 111 17852 104.72 863 845 162.4
C 14 238 138680 699.88 850 858 196.9
C 3 233 64525 323.31 850 858 196.9
C 7 247 11636 54.73 850 858 196.9
D 8 195 897253 4516.55 853 833 198.5
D 1 52 859793 4327.81 853 833 198.5
D 2 250 196003 983.35 853 833 198.5

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