ASTROSAT CZTI

Data Quality Report

Orbit 27604

Creation date: 2024-06-27T19:42:04.892291
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_257T01_9000003976_27604cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27604cztM0_level2_quad_clean.evt
Size (bytes)501,223,68082,503,360
Size478.0 MB 78.7 MB
Events in quadrant A3,211,917536,160
Events in quadrant B3,778,514528,891
Events in quadrant C3,284,887518,840
Events in quadrant D4,487,044484,721

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131160
B0149510
C0133810
D0174360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6149340.552935%
B61492784.521060%
C6149681.105871%
D61491963.187510%

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 7524 6151 5 5 0.07% 0.08%
B 7524 6151 158 158 2.10% 2.57%
C 7524 6151 0 0 0.00% 0.00%
D 7524 6151 155 155 2.06% 2.52%

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 8 192 13358 77.09 827 813 162.7
A 13 254 10600 60.14 827 813 162.7
A 6 16 7465 40.88 827 813 162.7
B 3 64 445135 2976.61 806 789 149.3
B 10 245 94769 629.56 806 789 149.3
B 0 230 46182 304.08 806 789 149.3
C 14 238 130786 705.81 797 805 184.2
C 8 208 30240 159.84 797 805 184.2
C 1 16 9280 46.02 797 805 184.2
D 7 80 926112 4998.22 782 762 185.1
D 1 52 445744 2403.54 782 762 185.1
D 2 250 78641 420.66 782 762 185.1

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