ASTROSAT CZTI

Data Quality Report

Orbit 19976

Creation date: 2024-06-27T18:09:38.020230
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/AS1C04_005T01_9000002976_19976cztM0_level2.evt modeM0/AS1C04_005T01_9000002976_19976cztM0_level2_quad_clean.evt
Size (bytes)764,429,76069,500,160
Size729.0 MB 66.3 MB
Events in quadrant A11,807,295216,897
Events in quadrant B3,380,410501,163
Events in quadrant C3,993,462476,561
Events in quadrant D3,551,125476,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393213
B0138152
C0160382
D0144022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6182432269.912650%
B6182981.585247%
C61821873.024911%
D61821482.394047%

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 7492 6183 3418 3418 45.62% 55.28%
B 7492 6182 2 2 0.03% 0.03%
C 7492 6182 14 14 0.19% 0.23%
D 7492 6183 78 78 1.04% 1.26%

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 14 238 9749567 104754.2 462 454 93.1
A 14 254 260714 2796.49 462 454 93.1
A 14 237 13787 143.26 462 454 93.1
B 12 111 18712 112.33 848 831 159.2
B 11 111 16563 98.83 848 831 159.2
B 4 171 15668 93.21 848 831 159.2
C 9 221 572084 3031.15 819 826 188.5
C 14 238 128714 678.58 819 826 188.5
C 3 233 80449 422.49 819 826 188.5
D 1 52 273681 1352.7 835 813 201.7
D 7 96 70592 345.92 835 813 201.7
D 12 218 38927 188.94 835 813 201.7

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