ASTROSAT CZTI

Data Quality Report

Orbit 29441

Creation date: 2024-06-27T20:04:09.417001
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_110T02_9000004234_29441cztM0_level2.evt modeM0/AS1A10_110T02_9000004234_29441cztM0_level2_quad_clean.evt
Size (bytes)650,494,080105,554,880
Size620.4 MB 100.7 MB
Events in quadrant A3,534,155717,713
Events in quadrant B3,615,828727,949
Events in quadrant C7,236,930630,581
Events in quadrant D4,871,770665,024

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141872
B0145192
C0261752
D0189392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6531650.995253%
B6530781.194487%
C6530155323.782542%
D65302143.277182%

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 7816 6532 0 0 0.00% 0.00%
B 7815 6531 3 3 0.04% 0.05%
C 7815 6531 107 107 1.37% 1.64%
D 7815 6531 127 127 1.63% 1.94%

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 1 113 14752 76.84 911 897 180.3
A 13 254 12560 64.68 911 897 180.3
A 5 98 8657 43.04 911 897 180.3
B 10 245 57018 338.44 892 874 165.9
B 12 111 19809 114.14 892 874 165.9
B 0 229 19724 113.63 892 874 165.9
C 3 233 3516984 20092.35 767 775 175.0
C 14 254 359060 2047.32 767 775 175.0
C 14 238 351411 2003.61 767 775 175.0
D 1 52 851095 4198.3 863 843 202.5
D 8 195 329602 1623.32 863 843 202.5
D 13 104 230757 1135.25 863 843 202.5

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