ASTROSAT CZTI

Data Quality Report

Orbit 40633

Creation date: 2024-06-27T22:18:29.517529
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/AS1A12_029T01_9000005556_40633cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40633cztM0_level2_quad_clean.evt
Size (bytes)287,095,68087,638,400
Size273.8 MB 83.6 MB
Events in quadrant A2,719,033595,383
Events in quadrant B2,531,198618,084
Events in quadrant C2,470,961580,626
Events in quadrant D2,510,239504,016

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109853
B0107912
C0104672
D0108862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507180.157760%
B5071250.492999%
C507180.157760%
D50713476.842832%

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 7044 5072 4 4 0.06% 0.08%
B 7044 5072 17 17 0.24% 0.34%
C 7044 5072 3 3 0.04% 0.06%
D 7043 5070 28 28 0.40% 0.55%

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 453149 3842.11 576 566 117.8
A 15 223 33082 276.04 576 566 117.8
A 3 137 6262 48.35 576 566 117.8
B 0 229 117040 1054.61 574 559 110.4
B 5 255 76746 689.79 574 559 110.4
B 0 190 45873 410.27 574 559 110.4
C 15 214 223614 1726.37 555 558 129.2
C 14 254 63854 489.89 555 558 129.2
C 0 10 11521 84.85 555 558 129.2
D 12 191 161659 1235.17 534 520 130.5
D 2 250 81348 619.56 534 520 130.5
D 13 249 50484 382.99 534 520 130.5

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