ASTROSAT CZTI

Data Quality Report

Orbit 20580

Creation date: 2024-06-27T18:17:27.773780
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/AS1A06_009T02_9000003044_20580cztM0_level2.evt modeM0/AS1A06_009T02_9000003044_20580cztM0_level2_quad_clean.evt
Size (bytes)669,395,520109,811,520
Size638.4 MB 104.7 MB
Events in quadrant A3,913,486701,519
Events in quadrant B4,429,240704,394
Events in quadrant C3,951,645683,414
Events in quadrant D7,391,451634,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175161
B0188761
C0175111
D0278771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8659300.346460%
B86601031.189376%
C8660730.842956%
D86608049.284065%

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 9214 8659 0 0 0.00% 0.00%
B 9215 8660 29 29 0.31% 0.33%
C 9215 8660 0 0 0.00% 0.00%
D 9215 8660 706 706 7.66% 8.15%

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 6 240 10697 47.56 1014 991 204.1
A 0 226 8825 38.39 1014 991 204.1
A 3 137 8479 36.69 1014 991 204.1
B 7 220 316605 1646.48 1004 980 191.7
B 0 197 56748 290.92 1004 980 191.7
B 0 190 45408 231.76 1004 980 191.7
C 14 238 152426 665.39 968 973 227.6
C 8 128 11693 47.1 968 973 227.6
C 13 61 6950 26.26 968 973 227.6
D 5 222 1784908 7733.55 951 924 230.7
D 1 52 1096127 4747.69 951 924 230.7
D 1 20 465350 2013.28 951 924 230.7

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