ASTROSAT CZTI

Data Quality Report

Orbit 36548

Creation date: 2024-06-27T21:28:15.111407
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/AS1A11_089T02_9000005216_36548cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36548cztM0_level2_quad_clean.evt
Size (bytes)464,725,44059,457,600
Size443.2 MB 56.7 MB
Events in quadrant A2,885,646370,259
Events in quadrant B3,494,330366,271
Events in quadrant C3,249,580361,290
Events in quadrant D4,076,007321,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117643
B0137652
C0127792
D0156682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5435130.239190%
B54351192.189512%
C54351001.839926%
D54353696.789328%

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 7288 5436 3 3 0.04% 0.06%
B 7288 5436 54 54 0.74% 0.99%
C 7288 5436 68 68 0.93% 1.25%
D 7288 5436 325 325 4.46% 5.98%

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 201231 1494.13 672 661 134.2
A 15 223 43530 319.35 672 661 134.2
A 9 143 25303 183.57 672 661 134.2
B 5 172 610300 4857.15 663 646 125.5
B 5 255 112648 892.33 663 646 125.5
B 0 190 33104 258.59 663 646 125.5
C 0 10 481303 3251.88 643 648 147.8
C 15 214 234921 1584.98 643 648 147.8
C 1 16 11501 73.43 643 648 147.8
D 12 217 674757 4341.53 631 613 155.3
D 12 235 320606 2060.78 631 613 155.3
D 2 250 159945 1026.11 631 613 155.3

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