ASTROSAT CZTI

Data Quality Report

Orbit 25590

Creation date: 2024-06-27T19:19:17.679147
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/AS1A09_043T02_9000003726_25590cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25590cztM0_level2_quad_clean.evt
Size (bytes)683,098,56068,664,960
Size651.5 MB 65.5 MB
Events in quadrant A4,246,659440,667
Events in quadrant B3,602,338455,100
Events in quadrant C3,488,499414,589
Events in quadrant D8,914,116317,830

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165230
B0145400
C0141440
D0308500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64561762.726146%
B6456270.418216%
C6456570.882900%
D6456181828.159851%

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 7786 6457 141 141 1.81% 2.18%
B 7786 6457 2 2 0.03% 0.03%
C 7786 6457 5 5 0.06% 0.08%
D 7786 6456 1668 1668 21.42% 25.84%

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 8 192 588166 3299.04 902 887 178.0
A 6 16 180654 1009.84 902 887 178.0
A 13 254 10707 55.16 902 887 178.0
B 12 111 19312 109.14 908 890 168.8
B 11 111 17451 98.12 908 890 168.8
B 14 111 15784 88.24 908 890 168.8
C 14 238 140255 711.57 848 856 195.9
C 3 233 31461 156.22 848 856 195.9
C 0 207 13895 66.56 848 856 195.9
D 1 52 4386137 23500.35 778 758 186.6
D 12 2 1039289 5565.28 778 758 186.6
D 8 195 414897 2219.29 778 758 186.6

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