ASTROSAT CZTI

Data Quality Report

Orbit 48428

Creation date: 2024-09-11T08:12:37.777450
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/AS1A13_029T01_9000006426_48428cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48428cztM0_level2_quad_clean.evt
Size (bytes)723,761,280149,273,280
Size690.2 MB 142.4 MB
Events in quadrant A10,035,610974,856
Events in quadrant B4,600,0161,025,886
Events in quadrant C4,916,930980,791
Events in quadrant D6,500,345876,601

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362932
B0205372
C0214152
D0263062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95414885.114768%
B95421521.592957%
C95421281.341438%
D95413824.003773%

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 11271 9543 162 162 1.44% 1.70%
B 11272 9544 48 48 0.43% 0.50%
C 11272 9544 73 73 0.65% 0.76%
D 11271 9543 221 221 1.96% 2.32%

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 10 83 5608435 25811.16 1033 1010 217.2
A 13 248 393158 1805.07 1033 1010 217.2
A 7 3 25713 113.71 1033 1010 217.2
B 12 16 285381 1380.09 1040 1004 206.1
B 5 255 92147 442.32 1040 1004 206.1
B 8 234 85443 409.79 1040 1004 206.1
C 12 2 765903 3121.32 1030 1036 245.0
C 12 250 99022 399.87 1030 1036 245.0
C 15 208 21020 81.55 1030 1036 245.0
D 2 165 1890167 7268.71 1022 989 259.9
D 8 240 151777 580.16 1022 989 259.9
D 12 233 135769 518.57 1022 989 259.9

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