ASTROSAT CZTI

Data Quality Report

Orbit 13662

Creation date: 2024-06-27T16:44:44.875610
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/AS1T02_039T01_9000002026_13662cztM0_level2.evt modeM0/AS1T02_039T01_9000002026_13662cztM0_level2_quad_clean.evt
Size (bytes)598,273,92074,370,240
Size570.6 MB 70.9 MB
Events in quadrant A5,209,258418,445
Events in quadrant B4,029,630481,969
Events in quadrant C3,483,488479,866
Events in quadrant D4,973,022434,348

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193603
B0159892
C0140522
D0189242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626371811.464155%
B62632333.720262%
C6263651.037841%
D62634376.977487%

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 7529 6265 595 595 7.90% 9.50%
B 7529 6265 39 39 0.52% 0.62%
C 7529 6265 0 0 0.00% 0.00%
D 7529 6265 401 401 5.33% 6.40%

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 9 143 1975927 11751.4 832 819 168.1
A 1 162 15807 89.17 832 819 168.1
A 15 69 10516 57.69 832 819 168.1
B 0 219 357778 2193.89 874 859 162.7
B 4 142 128372 783.79 874 859 162.7
B 0 189 68323 414.68 874 859 162.7
C 3 233 212376 1101.71 837 846 192.0
C 13 61 6260 28.2 837 846 192.0
C 0 207 3840 15.59 837 846 192.0
D 5 222 1420067 7277.31 821 803 195.0
D 8 195 125930 641.59 821 803 195.0
D 13 104 104212 530.23 821 803 195.0

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