ASTROSAT CZTI

Data Quality Report

Orbit 27425

Creation date: 2024-06-27T19:39:56.411858
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/AS1T03_249T01_9000003934_27425cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27425cztM0_level2_quad_clean.evt
Size (bytes)1,209,764,160201,355,200
Size1.1 GB 192.0 MB
Events in quadrant A7,031,0541,315,463
Events in quadrant B7,391,4441,315,919
Events in quadrant C13,436,9101,186,050
Events in quadrant D7,768,9961,249,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306070
B0318850
C0500460
D0336070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14943970.649133%
B149441460.976981%
C14944214214.333512%
D149442511.679604%

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 17073 14946 0 0 0.00% 0.00%
B 17074 14946 1 1 0.01% 0.01%
C 17074 14944 1206 1206 7.06% 8.07%
D 17074 14945 154 154 0.90% 1.03%

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 24380 61.82 1818 1779 365.6
A 3 137 17480 42.95 1818 1779 365.6
A 0 226 15606 37.82 1818 1779 365.6
B 0 190 145915 420.66 1797 1752 342.7
B 0 189 112207 322.3 1797 1752 342.7
B 12 111 43043 120.49 1797 1752 342.7
C 7 221 3323454 8659.81 1647 1655 383.6
C 2 16 3145205 8195.12 1647 1655 383.6
C 14 238 260789 675.55 1647 1655 383.6
D 1 52 650819 1564.2 1748 1701 415.0
D 2 250 400508 961.02 1748 1701 415.0
D 2 234 61663 144.49 1748 1701 415.0

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