ASTROSAT CZTI

Data Quality Report

Orbit 27185

Creation date: 2024-06-27T19:37:29.287429
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_243T01_9000003918_27185cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27185cztM0_level2_quad_clean.evt
Size (bytes)512,424,00091,514,880
Size488.7 MB 87.3 MB
Events in quadrant A3,279,447607,604
Events in quadrant B3,295,460625,478
Events in quadrant C3,181,677580,529
Events in quadrant D5,340,625523,680

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136600
B0135830
C0132360
D0200130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6218590.948858%
B6218480.771952%
C6218580.932776%
D62186159.890640%

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 7528 6219 11 11 0.15% 0.18%
B 7528 6219 0 0 0.00% 0.00%
C 7528 6219 0 0 0.00% 0.00%
D 7528 6219 639 639 8.49% 10.27%

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 13 248 67328 406.46 823 811 163.7
A 15 174 19836 116.25 823 811 163.7
A 8 192 13307 76.36 823 811 163.7
B 5 172 26772 167.63 822 805 154.9
B 0 190 19918 123.38 822 805 154.9
B 12 111 17964 110.77 822 805 154.9
C 14 238 125751 685.34 781 788 182.3
C 13 61 5428 25.45 781 788 182.3
C 15 208 5323 24.87 781 788 182.3
D 1 52 1713323 8631.42 754 740 198.4
D 7 38 558668 2811.96 754 740 198.4
D 2 250 125867 630.64 754 740 198.4

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