ASTROSAT CZTI

Data Quality Report

Orbit 08985

Creation date: 2024-06-27T15:39:42.287339
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/AS1A03_025T08_9000001248_08985cztM0_level2.evt modeM0/AS1A03_025T08_9000001248_08985cztM0_level2_quad_clean.evt
Size (bytes)1,285,361,280224,720,640
Size1.2 GB 214.3 MB
Events in quadrant A10,517,8221,379,637
Events in quadrant B9,159,4961,405,304
Events in quadrant C8,845,7921,377,677
Events in quadrant D9,124,1381,338,922

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04342516
B03947315
C03930813
D04042511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189413041.604984%
B189411190.628267%
C18941870.459321%
D189431030.543736%

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 22520 18949 121 121 0.54% 0.64%
B 22520 18949 9 9 0.04% 0.05%
C 22520 18949 35 35 0.16% 0.18%
D 22520 18949 53 53 0.24% 0.28%

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 8 5 1619912 3561.28 2249 2200 454.2
A 15 174 178134 387.31 2249 2200 454.2
A 5 16 46132 96.71 2249 2200 454.2
B 0 219 103311 233.4 2267 2213 433.2
B 4 173 78835 176.89 2267 2213 433.2
B 12 111 46758 102.84 2267 2213 433.2
C 4 254 173175 338.59 2188 2196 505.0
C 14 234 130178 253.44 2188 2196 505.0
C 13 61 16700 28.72 2188 2196 505.0
D 1 52 353777 634.52 2173 2120 554.2
D 7 71 196491 350.72 2173 2120 554.2
D 2 14 133692 237.4 2173 2120 554.2

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