ASTROSAT CZTI

Data Quality Report

Orbit 18144

Creation date: 2024-06-27T17:45:40.492922
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/AS1A05_082T08_9000002698_18144cztM0_level2.evt modeM0/AS1A05_082T08_9000002698_18144cztM0_level2_quad_clean.evt
Size (bytes)587,122,560111,867,840
Size559.9 MB 106.7 MB
Events in quadrant A4,143,444710,430
Events in quadrant B4,022,948722,494
Events in quadrant C3,925,267697,365
Events in quadrant D5,123,644678,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018385180
B017787189
C017499197
D021319246

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01722
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83421501.798130%
B83351451.739652%
C83321541.848296%
D83232162.595218%

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 9255 8418 5 5 0.05% 0.06%
B 9256 8413 5 5 0.05% 0.06%
C 9254 8413 0 0 0.00% 0.00%
D 9256 8413 116 116 1.25% 1.38%

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 15 174 293418 1431.71 998 978 204.3
A 4 2 12939 58.56 998 978 204.3
A 0 226 8720 37.9 998 978 204.3
B 3 64 24381 120.57 1003 973 194.1
B 0 230 23962 118.41 1003 973 194.1
B 12 111 23681 116.96 1003 973 194.1
C 14 238 147212 641.62 960 965 227.9
C 3 233 25864 109.24 960 965 227.9
C 13 61 7041 26.66 960 965 227.9
D 11 176 422217 1765.09 962 933 238.7
D 10 70 418777 1750.68 962 933 238.7
D 7 238 389015 1625.98 962 933 238.7

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