ASTROSAT CZTI

Data Quality Report

Orbit 28018

Creation date: 2024-06-27T19:47:07.684878
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_045T01_9000004046_28018cztM0_level2.evt modeM0/AS1A10_045T01_9000004046_28018cztM0_level2_quad_clean.evt
Size (bytes)495,262,08076,322,880
Size472.3 MB 72.8 MB
Events in quadrant A3,096,938486,113
Events in quadrant B3,192,645479,706
Events in quadrant C3,300,341455,980
Events in quadrant D4,971,082438,899

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131260
B0134630
C0136960
D0191310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6449160.248100%
B6449340.527214%
C6449871.349046%
D64483966.141439%

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 7394 6450 0 0 0.00% 0.00%
B 7394 6450 9 9 0.12% 0.14%
C 7394 6449 25 25 0.34% 0.39%
D 7393 6448 354 354 4.79% 5.49%

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 0 13 19427 116.43 796 780 160.2
A 13 254 10304 59.47 796 780 160.2
A 3 137 7693 43.16 796 780 160.2
B 10 245 80665 520.21 788 767 153.6
B 12 111 19196 119.99 788 767 153.6
B 11 111 17301 107.65 788 767 153.6
C 2 16 127914 706.87 761 768 179.9
C 14 238 121149 669.26 761 768 179.9
C 3 233 84350 464.67 761 768 179.9
D 1 52 1313968 7205.1 755 736 182.3
D 8 195 626994 3435.99 755 736 182.3
D 7 80 114328 623.23 755 736 182.3

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