ASTROSAT CZTI

Data Quality Report

Orbit 13847

Creation date: 2024-06-27T16:46:52.693828
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/AS1A04_199T01_9000002040_13847cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13847cztM0_level2_quad_clean.evt
Size (bytes)466,997,76089,663,040
Size445.4 MB 85.5 MB
Events in quadrant A3,213,493570,726
Events in quadrant B3,348,759576,681
Events in quadrant C3,093,515565,635
Events in quadrant D4,040,600543,683

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139963
B0142292
C0136392
D0164042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6581831.261207%
B6581971.473940%
C6581410.623006%
D6581661.002887%

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 7567 6582 26 26 0.34% 0.40%
B 7567 6582 30 30 0.40% 0.46%
C 7567 6582 0 0 0.00% 0.00%
D 7567 6582 38 38 0.50% 0.58%

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 9 143 121308 740.8 794 778 162.7
A 8 15 23015 136.67 794 778 162.7
A 0 23 11158 63.8 794 778 162.7
B 3 64 114254 736.86 795 776 154.0
B 0 219 67681 434.44 795 776 154.0
B 3 209 21769 136.32 795 776 154.0
C 3 233 60584 331.17 777 781 180.6
C 13 61 5470 25.97 777 781 180.6
C 14 234 3730 16.33 777 781 180.6
D 1 52 622632 3318.52 773 754 187.4
D 5 222 228584 1215.77 773 754 187.4
D 10 157 179172 952.09 773 754 187.4

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