ASTROSAT CZTI

Data Quality Report

Orbit 26838

Creation date: 2024-06-27T19:33:31.812514
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_145T01_9000003866_26838cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26838cztM0_level2_quad_clean.evt
Size (bytes)501,678,72090,979,200
Size478.4 MB 86.8 MB
Events in quadrant A3,143,635600,880
Events in quadrant B3,700,321605,691
Events in quadrant C3,087,845577,263
Events in quadrant D4,859,619557,099

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127450
B0145160
C0126330
D0183580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5929570.961376%
B59301833.086003%
C5930811.365936%
D59303646.138280%

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 7089 5930 0 0 0.00% 0.00%
B 7090 5931 81 81 1.14% 1.37%
C 7090 5931 2 2 0.03% 0.03%
D 7090 5931 252 252 3.55% 4.25%

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 0 13 58113 354.71 795 783 161.6
A 7 192 22392 133.7 795 783 161.6
A 13 254 8455 47.47 795 783 161.6
B 3 64 546262 3721.88 775 760 146.6
B 10 246 52983 356.31 775 760 146.6
B 7 205 44575 298.94 775 760 146.6
C 14 238 121340 686.29 750 756 175.7
C 15 208 33942 188.87 750 756 175.7
C 2 16 8592 44.6 750 756 175.7
D 1 52 1048812 5831.32 747 731 179.7
D 7 80 915362 5088.83 747 731 179.7
D 2 250 54135 297.13 747 731 179.7

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