ASTROSAT CZTI

Data Quality Report

Orbit 37897

Creation date: 2024-06-27T21:45:51.301080
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/AS1T05_059T01_9000005354_37897cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37897cztM0_level2_quad_clean.evt
Size (bytes)416,525,76051,364,800
Size397.2 MB 49.0 MB
Events in quadrant A2,917,500312,115
Events in quadrant B2,667,771310,281
Events in quadrant C2,906,780305,413
Events in quadrant D3,784,673278,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117773
B0108602
C0117662
D0145852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4973170.341846%
B4973501.005429%
C4973551.105972%
D49731843.699980%

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 7065 4974 7 7 0.10% 0.14%
B 7065 4974 33 33 0.47% 0.66%
C 7065 4974 35 35 0.50% 0.70%
D 7065 4974 167 167 2.36% 3.36%

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 10 83 342320 2712.47 634 625 126.0
A 15 222 37265 290.86 634 625 126.0
A 13 6 26950 208.98 634 625 126.0
B 5 172 155762 1339.34 621 606 115.8
B 0 213 30395 257.14 621 606 115.8
B 12 111 13408 110.51 621 606 115.8
C 0 10 215976 1546.96 609 615 139.2
C 15 214 213543 1529.48 609 615 139.2
C 14 254 65740 467.8 609 615 139.2
D 1 52 357052 2397.53 611 597 148.7
D 2 249 219704 1473.72 611 597 148.7
D 7 223 204741 1373.08 611 597 148.7

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