ASTROSAT CZTI

Data Quality Report

Orbit 35849

Creation date: 2022-06-08T18:01:49.596208
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/AS1A11_080T01_9000005146_35849cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35849cztM0_level2_quad_clean.evt
Size (bytes)816,160,320149,270,400
Size778.4 MB 142.4 MB
Events in quadrant A6,464,432949,729
Events in quadrant B5,543,546954,272
Events in quadrant C5,664,740948,265
Events in quadrant D6,290,578896,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265114
B0238233
C0235843
D0262223

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11147380.340899%
B11147480.430609%
C11147630.565174%
D111471871.677581%

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 15236 11150 30 30 0.20% 0.27%
B 15236 11150 21 21 0.14% 0.19%
C 15236 11150 45 45 0.30% 0.40%
D 15236 11150 132 132 0.87% 1.18%

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 15 169 1118995 4249.08 1305 1285 263.0
A 10 83 282913 1070.63 1305 1285 263.0
A 13 6 20796 74.17 1305 1285 263.0
B 5 172 182642 738.51 1292 1260 245.6
B 0 213 133506 538.45 1292 1260 245.6
B 0 214 37928 149.3 1292 1260 245.6
C 15 214 465756 1583.24 1265 1274 293.4
C 0 10 210162 712.02 1265 1274 293.4
C 0 207 42534 140.64 1265 1274 293.4
D 13 249 531543 1739.94 1254 1222 304.8
D 8 195 230410 751.95 1254 1222 304.8
D 10 118 189123 616.49 1254 1222 304.8

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