ASTROSAT CZTI

Data Quality Report

Orbit 13826

Creation date: 2024-06-27T16:46:36.582266
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/AS1A04_199T01_9000002040_13826cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13826cztM0_level2_quad_clean.evt
Size (bytes)575,533,44075,628,800
Size548.9 MB 72.1 MB
Events in quadrant A3,447,363453,893
Events in quadrant B3,688,525455,338
Events in quadrant C3,439,373454,243
Events in quadrant D6,363,216421,531

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149993
B0155742
C0149922
D0240272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72471602.207810%
B72472663.670484%
C72471181.628260%
D72474315.947289%

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 7783 7248 0 0 0.00% 0.00%
B 7783 7248 70 70 0.90% 0.97%
C 7783 7249 0 0 0.00% 0.00%
D 7783 7248 267 267 3.43% 3.68%

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 1 162 15051 77.63 888 869 182.7
A 0 226 8275 40.54 888 869 182.7
A 0 23 7760 37.72 888 869 182.7
B 3 64 189926 1098.8 886 863 172.1
B 12 111 20572 114.55 886 863 172.1
B 4 173 17975 99.45 886 863 172.1
C 3 233 60194 292.57 866 871 202.8
C 13 61 6334 26.94 866 871 202.8
C 4 175 3574 13.33 866 871 202.8
D 10 157 2515252 11216.36 840 820 224.2
D 1 52 311094 1384.07 840 820 224.2
D 13 122 161013 714.59 840 820 224.2

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