ASTROSAT CZTI

Data Quality Report

Orbit 25387

Creation date: 2024-06-27T19:17:05.868864
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/AS1A09_057T04_9000003712_25387cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25387cztM0_level2_quad_clean.evt
Size (bytes)862,583,040155,410,560
Size822.6 MB 148.2 MB
Events in quadrant A6,565,4911,010,672
Events in quadrant B5,572,3961,023,628
Events in quadrant C5,550,318980,835
Events in quadrant D7,714,937953,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264790
B0230540
C0229840
D0303460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10662730.684675%
B10663790.740880%
C106631331.247304%
D106634934.623464%

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 13117 10664 0 0 0.00% 0.00%
B 13118 10664 0 0 0.00% 0.00%
C 13118 10664 0 0 0.00% 0.00%
D 13118 10663 428 428 3.26% 4.01%

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 6 16 1078995 3848.03 1412 1383 280.0
A 15 173 34865 119.56 1412 1383 280.0
A 13 254 14918 48.33 1412 1383 280.0
B 0 190 76930 295.81 1381 1350 255.5
B 0 229 35032 131.83 1381 1350 255.5
B 12 111 30927 115.76 1381 1350 255.5
C 14 238 216780 687.04 1352 1366 313.5
C 7 87 30282 92.22 1352 1366 313.5
C 3 233 22075 66.05 1352 1366 313.5
D 7 238 1179346 3655.63 1364 1333 322.2
D 1 52 905719 2806.51 1364 1333 322.2
D 8 195 289821 895.24 1364 1333 322.2

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