ASTROSAT CZTI

Data Quality Report

Orbit 40534

Creation date: 2024-06-27T22:17:13.036233
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/AS1T05_070T01_9000005544_40534cztM0_level2.fits modeM0/AS1T05_070T01_9000005544_40534cztM0_level2_quad_clean.evt
Size (bytes)321,868,80084,790,080
Size307.0 MB 80.9 MB
Events in quadrant A2,937,903600,074
Events in quadrant B2,396,640614,786
Events in quadrant C2,771,431575,159
Events in quadrant D3,416,388425,391

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117343
B0102802
C0112082
D0134412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5019150.298864%
B5019120.239091%
C5019671.334927%
D5019119923.889221%

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 7172 5020 5 5 0.07% 0.10%
B 7172 5020 3 3 0.04% 0.06%
C 7172 5020 66 66 0.92% 1.31%
D 7172 5020 214 214 2.98% 4.26%

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 491989 4158.08 577 568 118.2
A 12 189 111911 942.11 577 568 118.2
A 3 1 74055 621.8 577 568 118.2
B 3 112 71301 641.02 569 556 110.4
B 0 230 44678 399.79 569 556 110.4
B 4 171 18939 166.57 569 556 110.4
C 14 254 235036 1801.63 554 557 130.1
C 15 214 223537 1713.28 554 557 130.1
C 10 20 120006 917.79 554 557 130.1
D 12 227 729853 5906.43 495 480 123.5
D 2 250 350450 2834.04 495 480 123.5
D 12 191 220318 1780.24 495 480 123.5

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