ASTROSAT CZTI

Data Quality Report

Orbit 04666

Creation date: 2024-06-27T14:45:35.328363
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/AS1SLEW_01234_9000000585_04666cztM0_level2.evt modeM0/AS1SLEW_01234_9000000585_04666cztM0_level2_quad_clean.evt
Size (bytes)44,608,3201,477,440
Size42.5 MB 1.4 MB
Events in quadrant A189,4352,061
Events in quadrant B214,1802,006
Events in quadrant C188,6871,930
Events in quadrant D726,260400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08510
B08680
C08500
D024200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A42500.000000%
B42500.000000%
C42500.000000%
D42522552.941176%

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 425 425 0 0 0.00% 0.00%
B 425 425 0 0 0.00% 0.00%
C 425 425 0 0 0.00% 0.00%
D 424 424 214 214 50.47% 50.47%

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 12 194 545 41.67 49 48 11.9
A 0 226 487 36.81 49 48 11.9
A 13 14 427 31.78 49 48 11.9
B 15 204 17929 1525.15 48 47 11.7
B 14 167 6029 510.2 48 47 11.7
B 8 3 1375 113.26 48 47 11.7
C 8 128 1402 105.05 47 47 12.9
C 8 144 564 40.08 47 47 12.9
C 8 112 564 40.08 47 47 12.9
D 8 112 596640 67999.12 27 26 8.8
D 9 82 10251 1165.4 27 26 8.8
D 2 136 7979 906.44 27 26 8.8

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