ASTROSAT CZTI

Data Quality Report

Orbit 31704

Creation date: 2024-06-27T20:31:44.485798
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/AS1T04_034T01_9000004632_31704cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31704cztM0_level2_quad_clean.evt
Size (bytes)640,857,600102,335,040
Size611.2 MB 97.6 MB
Events in quadrant A4,248,275653,585
Events in quadrant B6,050,062664,096
Events in quadrant C4,289,696638,556
Events in quadrant D4,327,562635,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173683
B0233152
C0174722
D0178532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72842673.665568%
B72843705.079627%
C72842823.871499%
D72841111.523888%

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 7639 7285 109 109 1.43% 1.50%
B 7639 7285 71 71 0.93% 0.97%
C 7639 7285 52 52 0.68% 0.71%
D 7639 7285 27 27 0.35% 0.37%

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 0 13 729936 3927.91 910 892 185.6
A 13 254 13667 68.83 910 892 185.6
A 3 137 9540 46.59 910 892 185.6
B 6 159 2021313 11409.05 907 885 177.1
B 5 172 241317 1357.68 907 885 177.1
B 4 80 153391 861.18 907 885 177.1
C 3 233 322612 1531.34 881 886 210.1
C 0 10 287067 1362.15 881 886 210.1
C 14 238 140205 663.12 881 886 210.1
D 8 195 623425 2929.86 892 869 212.5
D 12 227 245434 1150.96 892 869 212.5
D 13 249 39120 180.02 892 869 212.5

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