ASTROSAT CZTI

Data Quality Report

Orbit 34421

Creation date: 2022-02-08T20:23:44.491037
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_108T02_9000004914_34421cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34421cztM0_level2_quad_clean.evt
Size (bytes)527,322,24058,976,640
Size502.9 MB 56.2 MB
Events in quadrant A2,898,938366,290
Events in quadrant B4,434,729347,125
Events in quadrant C3,182,400357,715
Events in quadrant D5,090,631338,378

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119733
B0169112
C0128742
D0190422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5374170.316338%
B53744648.634164%
C5374480.893189%
D53743556.605880%

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 7377 5375 2 2 0.03% 0.04%
B 7377 5375 323 323 4.38% 6.01%
C 7377 5375 31 31 0.42% 0.58%
D 7377 5375 294 294 3.99% 5.47%

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 9 143 41054 281.46 726 713 143.3
A 10 83 36523 249.85 726 713 143.3
A 13 6 17157 114.73 726 713 143.3
B 5 172 966466 7497.77 694 680 128.8
B 0 229 436793 3385.72 694 680 128.8
B 0 190 267963 2075.02 694 680 128.8
C 15 214 226715 1440.81 692 700 156.9
C 0 10 147918 938.49 692 700 156.9
C 14 67 64622 407.49 692 700 156.9
D 8 195 1130939 6785.69 678 661 166.6
D 13 249 623665 3740.24 678 661 166.6
D 2 250 159178 951.67 678 661 166.6

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