ASTROSAT CZTI

Data Quality Report

Orbit 31560

Creation date: 2024-06-27T20:29:58.787212
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_056T01_9000004598_31560cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31560cztM0_level2_quad_clean.evt
Size (bytes)528,747,84091,241,280
Size504.3 MB 87.0 MB
Events in quadrant A3,208,740576,359
Events in quadrant B5,308,995582,099
Events in quadrant C3,298,686565,315
Events in quadrant D3,719,501549,109

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143131
B0213381
C0144151
D0157551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7040851.207386%
B70411502.130379%
C7041961.363443%
D70411061.505468%

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 7325 7041 0 0 0.00% 0.00%
B 7326 7041 2 2 0.03% 0.03%
C 7326 7041 0 0 0.00% 0.00%
D 7326 7041 61 61 0.83% 0.87%

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 13 254 10676 57.97 832 814 170.1
A 3 137 8799 46.93 832 814 170.1
A 0 226 6935 35.98 832 814 170.1
B 6 159 1894547 11803.93 824 802 160.4
B 4 80 135430 839.15 824 802 160.4
B 0 190 23946 144.26 824 802 160.4
C 14 238 136211 724.53 795 799 186.9
C 2 114 16149 82.13 795 799 186.9
C 14 254 12411 62.13 795 799 186.9
D 12 218 352252 1850.36 798 774 190.0
D 8 195 212436 1114.29 798 774 190.0
D 12 233 53840 279.37 798 774 190.0

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