ASTROSAT CZTI

Data Quality Report

Orbit 40561

Creation date: 2024-06-27T22:17:35.954554
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/AS1A12_054T02_9000005550_40561cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40561cztM0_level2_quad_clean.evt
Size (bytes)358,871,04084,153,600
Size342.2 MB 80.3 MB
Events in quadrant A2,818,461618,311
Events in quadrant B4,865,407590,256
Events in quadrant C2,756,230574,139
Events in quadrant D2,450,903412,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112813
B0178602
C0111342
D0107342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5031130.258398%
B50314739.401709%
C50311883.736832%
D5031132726.376466%

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 7064 5032 3 3 0.04% 0.06%
B 7064 5032 393 393 5.56% 7.81%
C 7064 5032 93 93 1.32% 1.85%
D 7064 5031 9 9 0.13% 0.18%

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 10 83 470777 3913.38 589 579 120.2
A 12 189 65435 539.79 589 579 120.2
A 13 254 6200 46.78 589 579 120.2
B 3 112 1671326 15537.65 571 557 107.5
B 7 202 795685 7394.45 571 557 107.5
B 5 255 104622 967.77 571 557 107.5
C 14 254 355771 2786.16 550 553 127.5
C 15 214 217424 1701.03 550 553 127.5
C 0 10 30010 231.05 550 553 127.5
D 12 191 310472 2707.12 463 451 114.5
D 12 227 95358 828.73 463 451 114.5
D 12 79 77007 668.49 463 451 114.5

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