ASTROSAT CZTI

Data Quality Report

Orbit 28601

Creation date: 2024-06-27T19:53:52.648847
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_28601cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28601cztM0_level2_quad_clean.evt
Size (bytes)474,284,16088,655,040
Size452.3 MB 84.5 MB
Events in quadrant A3,697,475575,394
Events in quadrant B3,137,468587,075
Events in quadrant C3,281,311568,962
Events in quadrant D3,849,547543,327

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147291
B0126411
C0131611
D0151232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5872370.630109%
B5873310.527839%
C5873741.260003%
D58721161.975477%

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 7157 5872 2 2 0.03% 0.03%
B 7158 5873 3 3 0.04% 0.05%
C 7158 5873 6 6 0.08% 0.10%
D 7157 5872 113 113 1.58% 1.92%

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 12 16 503093 3166.21 803 789 158.6
A 12 194 90585 566.02 803 789 158.6
A 13 254 10092 58.64 803 789 158.6
B 10 245 17880 114.96 788 769 148.8
B 12 111 17405 111.77 788 769 148.8
B 11 111 16241 103.95 788 769 148.8
C 14 238 126354 704.92 771 778 178.1
C 15 208 52159 288.43 771 778 178.1
C 3 233 50212 277.5 771 778 178.1
D 1 52 507537 2780.15 775 758 182.3
D 8 195 197574 1079.72 775 758 182.3
D 13 104 133864 730.21 775 758 182.3

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