ASTROSAT CZTI

Data Quality Report

Orbit 28688

Creation date: 2024-06-27T19:54:57.029443
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_021T04_9000004116_28688cztM0_level2.evt modeM0/AS1A10_021T04_9000004116_28688cztM0_level2_quad_clean.evt
Size (bytes)499,383,36086,535,360
Size476.2 MB 82.5 MB
Events in quadrant A3,036,915571,275
Events in quadrant B3,598,232576,481
Events in quadrant C3,713,024549,504
Events in quadrant D4,390,502525,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122031
B0142061
C0148981
D0168991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5683540.950202%
B56831262.217139%
C56831492.621855%
D56832945.173324%

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 6968 5683 0 0 0.00% 0.00%
B 6968 5683 42 42 0.60% 0.74%
C 6968 5683 10 10 0.14% 0.18%
D 6968 5683 241 241 3.46% 4.24%

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 15 174 11337 67.85 785 772 155.7
A 13 254 8294 48.31 785 772 155.7
A 3 137 6976 39.85 785 772 155.7
B 10 245 542674 3764.26 765 748 144.0
B 10 247 39185 266.99 765 748 144.0
B 12 111 17031 113.1 765 748 144.0
C 3 233 597515 3485.25 743 750 171.2
C 14 238 127451 739.96 743 750 171.2
C 2 16 84481 489.01 743 750 171.2
D 1 52 1104356 6323.34 743 724 174.5
D 8 195 241963 1382.2 743 724 174.5
D 12 233 93560 531.91 743 724 174.5

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