ASTROSAT CZTI

Data Quality Report

Orbit 16881

Creation date: 2024-06-27T17:28:57.007991
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/AS1A05_004T06_9000002506_16881cztM0_level2.evt modeM0/AS1A05_004T06_9000002506_16881cztM0_level2_quad_clean.evt
Size (bytes)632,370,24094,754,880
Size603.1 MB 90.4 MB
Events in quadrant A3,845,060614,153
Events in quadrant B3,864,526618,277
Events in quadrant C3,347,571601,641
Events in quadrant D7,618,784545,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160722
B0159521
C0145731
D0275161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70241712.434510%
B70241882.676538%
C70241432.035877%
D7024102214.550114%

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 7310 7027 66 66 0.90% 0.94%
B 7310 7027 47 47 0.64% 0.67%
C 7310 7027 1 1 0.01% 0.01%
D 7310 7027 771 771 10.55% 10.97%

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 15 174 554422 3188.95 850 831 173.6
A 9 143 11454 61.19 850 831 173.6
A 0 226 7601 39.0 850 831 173.6
B 15 35 254650 1558.09 842 819 162.9
B 10 16 177797 1086.35 842 819 162.9
B 7 220 36399 218.4 842 819 162.9
C 14 238 123389 634.46 818 822 193.2
C 3 233 16727 82.33 818 822 193.2
C 5 112 15261 74.74 818 822 193.2
D 1 52 4349312 22176.16 795 772 196.1
D 10 70 176768 897.52 795 772 196.1
D 2 234 35120 175.16 795 772 196.1

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