ASTROSAT CZTI

Data Quality Report

Orbit 21291

Creation date: 2024-06-27T18:25:59.833622
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/AS1T03_140T01_9000003142_21291cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21291cztM0_level2_quad_clean.evt
Size (bytes)477,005,760117,912,960
Size454.9 MB 112.5 MB
Events in quadrant A3,360,009811,930
Events in quadrant B3,612,334800,326
Events in quadrant C3,266,273769,561
Events in quadrant D3,784,793755,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140791
B0146981
C0137171
D0153501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227801.284728%
B62271722.762165%
C62271001.605910%
D62271302.087683%

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 7527 6227 4 4 0.05% 0.06%
B 7527 6228 89 89 1.18% 1.43%
C 7527 6228 0 0 0.00% 0.00%
D 7527 6228 75 75 1.00% 1.20%

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 5 16 21102 117.85 860 846 171.9
A 13 254 10581 56.64 860 846 171.9
A 4 2 10057 53.59 860 846 171.9
B 3 64 285892 1835.54 834 819 155.3
B 0 190 23623 146.83 834 819 155.3
B 12 111 17554 107.75 834 819 155.3
C 14 238 129489 696.14 801 808 184.8
C 3 233 12785 64.79 801 808 184.8
C 13 61 5719 26.57 801 808 184.8
D 1 52 233833 1189.99 822 800 195.8
D 7 38 192287 977.84 822 800 195.8
D 12 235 100681 510.05 822 800 195.8

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