ASTROSAT CZTI

Data Quality Report

Orbit 24008

Creation date: 2024-06-27T19:01:04.970274
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/AS1A07_165T01_9000003558_24008cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24008cztM0_level2_quad_clean.evt
Size (bytes)978,379,200248,232,960
Size933.1 MB 236.7 MB
Events in quadrant A6,295,6731,677,889
Events in quadrant B6,310,0361,722,225
Events in quadrant C6,347,3761,642,459
Events in quadrant D9,791,0391,570,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272803
B0270013
C0269053
D0379503

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131051120.854636%
B13106930.709599%
C131061691.289486%
D131066524.974821%

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 15365 13108 24 24 0.16% 0.18%
B 15366 13109 12 12 0.08% 0.09%
C 15366 13109 9 9 0.06% 0.07%
D 15366 13109 453 453 2.95% 3.46%

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 16 228560 721.36 1571 1535 314.7
A 13 254 20253 59.48 1571 1535 314.7
A 3 137 13734 38.76 1571 1535 314.7
B 0 197 74753 247.54 1571 1531 295.8
B 0 190 48053 157.27 1571 1531 295.8
B 12 111 36378 117.8 1571 1531 295.8
C 14 238 241098 681.64 1515 1523 351.5
C 7 247 135172 380.26 1515 1523 351.5
C 0 239 67254 187.02 1515 1523 351.5
D 8 195 1545915 4255.77 1508 1467 362.9
D 1 52 1292893 3558.56 1508 1467 362.9
D 12 218 967432 2661.74 1508 1467 362.9

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