ASTROSAT CZTI

Data Quality Report

Orbit 22606

Creation date: 2024-06-27T18:43:26.990502
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/AS1C05_006T01_9000003356_22606cztM0_level2.evt modeM0/AS1C05_006T01_9000003356_22606cztM0_level2_quad_clean.evt
Size (bytes)429,940,800101,793,600
Size410.0 MB 97.1 MB
Events in quadrant A3,029,800681,851
Events in quadrant B3,100,806690,840
Events in quadrant C3,044,255643,136
Events in quadrant D3,428,196638,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129621
B0131541
C0128331
D0140072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6147651.057426%
B6147681.106231%
C6147921.496665%
D6147580.943550%

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 7222 6148 1 1 0.01% 0.02%
B 7222 6148 0 0 0.00% 0.00%
C 7222 6148 0 0 0.00% 0.00%
D 7222 6148 3 3 0.04% 0.05%

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 18471 112.67 780 767 157.1
A 13 254 9864 57.89 780 767 157.1
A 0 226 6916 39.13 780 767 157.1
B 0 229 33634 222.94 771 753 147.5
B 0 197 19737 128.71 771 753 147.5
B 12 111 17546 113.86 771 753 147.5
C 14 238 117311 683.09 731 735 170.7
C 10 222 64508 373.68 731 735 170.7
C 10 22 5314 26.83 731 735 170.7
D 1 52 459495 2502.72 752 730 183.3
D 12 227 84029 454.43 752 730 183.3
D 2 234 23890 126.35 752 730 183.3

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