ASTROSAT CZTI

Data Quality Report

Orbit 08070

Creation date: 2024-06-27T15:27:32.923087
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/AS1A02_055T01_9000001114_08070cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08070cztM0_level2_quad_clean.evt
Size (bytes)1,187,942,400220,023,360
Size1.1 GB 209.8 MB
Events in quadrant A8,033,5241,338,645
Events in quadrant B8,820,4381,373,868
Events in quadrant C8,160,6421,385,699
Events in quadrant D9,736,4911,317,176

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036919249
B038457301
C036992265
D041887301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03722
B03720
C03722
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181111550.855833%
B180912091.155271%
C181081010.557765%
D181084362.407776%

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 19910 18163 3 3 0.02% 0.02%
B 19910 18153 40 40 0.20% 0.22%
C 19910 18162 0 0 0.00% 0.00%
D 19910 18170 258 258 1.30% 1.42%

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 13 251 27156 59.75 2080 2036 420.5
A 0 226 19377 41.24 2080 2036 420.5
A 12 194 18870 40.04 2080 2036 420.5
B 10 16 190256 472.62 2093 2040 398.2
B 0 214 163402 405.19 2093 2040 398.2
B 11 51 155603 385.61 2093 2040 398.2
C 1 16 219265 462.61 2036 2044 469.6
C 13 61 15412 28.47 2036 2044 469.6
C 8 222 7041 10.64 2036 2044 469.6
D 1 52 1213255 2316.42 2002 1951 522.9
D 1 83 594180 1132.54 2002 1951 522.9
D 2 14 119746 225.26 2002 1951 522.9

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