ASTROSAT CZTI

Data Quality Report

Orbit 32746

Creation date: 2024-06-27T20:41:33.198413
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/AS1A10_057T04_9000004728_32746cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32746cztM0_level2_quad_clean.evt
Size (bytes)426,844,80059,472,000
Size407.1 MB 56.7 MB
Events in quadrant A2,485,324363,808
Events in quadrant B2,939,798365,692
Events in quadrant C2,519,169362,405
Events in quadrant D4,622,043336,613

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107943
B0119392
C0109932
D0175672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5312260.489458%
B5312430.809488%
C5312150.282380%
D53122975.591114%

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 7075 5313 6 6 0.08% 0.11%
B 7075 5313 17 17 0.24% 0.32%
C 7075 5313 13 13 0.18% 0.24%
D 7075 5313 259 259 3.66% 4.87%

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 15 249 27525 214.07 625 613 125.7
A 15 237 27345 212.64 625 613 125.7
A 13 254 9423 70.08 625 613 125.7
B 0 219 79527 658.5 626 612 119.8
B 3 26 73876 611.34 626 612 119.8
B 5 172 69128 571.72 626 612 119.8
C 0 10 52623 371.6 603 608 140.0
C 15 159 34450 241.77 603 608 140.0
C 8 229 26475 184.8 603 608 140.0
D 7 80 723310 4993.21 591 580 144.7
D 8 195 512357 3535.78 591 580 144.7
D 2 250 277332 1912.03 591 580 144.7

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