ASTROSAT CZTI

Data Quality Report

Orbit 24077

Creation date: 2024-06-27T19:01:51.283866
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/AS1A07_165T01_9000003558_24077cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24077cztM0_level2_quad_clean.evt
Size (bytes)549,316,800140,590,080
Size523.9 MB 134.1 MB
Events in quadrant A3,444,939953,061
Events in quadrant B4,023,317955,674
Events in quadrant C3,766,889926,717
Events in quadrant D4,895,483904,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152462
B0168192
C0160762
D0195152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7453710.952637%
B74532503.354354%
C74531251.677177%
D74531341.797934%

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 7848 7454 0 0 0.00% 0.00%
B 7848 7454 108 108 1.38% 1.45%
C 7848 7454 5 5 0.06% 0.07%
D 7848 7454 89 89 1.13% 1.19%

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 13058 67.97 890 873 179.3
A 0 226 7736 38.28 890 873 179.3
A 3 137 7613 37.6 890 873 179.3
B 0 197 384618 2333.57 880 859 164.5
B 0 245 77616 466.75 880 859 164.5
B 0 189 62017 371.89 880 859 164.5
C 10 9 212146 1069.04 849 853 197.6
C 14 238 134079 674.06 849 853 197.6
C 7 247 87200 436.88 849 853 197.6
D 8 195 935983 4533.31 858 833 206.3
D 1 52 584488 2829.38 858 833 206.3
D 12 233 46790 222.79 858 833 206.3

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