ASTROSAT CZTI

Data Quality Report

Orbit 07674

Creation date: 2024-06-27T15:22:34.445830
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_029T01_9000001058_07674cztM0_level2.evt modeM0/AS1A02_029T01_9000001058_07674cztM0_level2_quad_clean.evt
Size (bytes)756,705,60076,040,640
Size721.7 MB 72.5 MB
Events in quadrant A3,521,088478,731
Events in quadrant B3,905,220483,034
Events in quadrant C10,179,313378,044
Events in quadrant D4,812,401448,944

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153363
B0163282
C0352452
D0191202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73632042.770610%
B73632583.504007%
C7363307341.735706%
D73643224.372624%

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 7958 7363 0 0 0.00% 0.00%
B 7958 7364 32 32 0.40% 0.43%
C 7957 7362 2449 2449 30.78% 33.27%
D 7959 7365 117 117 1.47% 1.59%

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 14 12807 63.93 909 888 186.4
A 0 226 8663 41.7 909 888 186.4
A 12 194 8071 38.53 909 888 186.4
B 4 173 171239 964.57 909 886 176.6
B 0 214 91316 512.03 909 886 176.6
B 0 219 36638 202.43 909 886 176.6
C 9 68 7342213 43436.53 724 728 169.0
C 13 61 5632 29.01 724 728 169.0
C 8 208 4693 23.46 724 728 169.0
D 2 152 878302 4018.45 882 855 218.4
D 13 104 237921 1085.69 882 855 218.4
D 12 0 143807 654.68 882 855 218.4

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