ASTROSAT CZTI

Data Quality Report

Orbit 27211

Creation date: 2024-06-27T19:37:45.221144
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/AS1T03_243T01_9000003918_27211cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27211cztM0_level2_quad_clean.evt
Size (bytes)860,184,000183,329,280
Size820.3 MB 174.8 MB
Events in quadrant A5,431,2421,254,440
Events in quadrant B6,310,2411,250,012
Events in quadrant C5,348,0521,177,853
Events in quadrant D8,260,6791,152,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228040
B0255880
C0225560
D0316090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103751301.253012%
B103762442.351581%
C103761781.715497%
D103765205.011565%

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 12815 10377 0 0 0.00% 0.00%
B 12816 10378 67 67 0.52% 0.65%
C 12816 10378 0 0 0.00% 0.00%
D 12816 10378 336 336 2.62% 3.24%

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 13 254 16000 52.61 1403 1379 277.9
A 0 226 12266 39.17 1403 1379 277.9
A 3 137 12067 38.46 1403 1379 277.9
B 3 64 807648 3114.06 1374 1342 258.9
B 15 33 106058 404.43 1374 1342 258.9
B 12 111 30339 111.99 1374 1342 258.9
C 14 238 213388 699.28 1311 1323 303.3
C 15 208 16270 49.29 1311 1323 303.3
C 4 224 10125 29.02 1311 1323 303.3
D 1 52 1440367 4359.93 1321 1292 330.1
D 12 17 491424 1484.94 1321 1292 330.1
D 12 233 469762 1419.31 1321 1292 330.1

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