ASTROSAT CZTI

Data Quality Report

Orbit 00608

Creation date: 2024-06-27T14:00:29.893364
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/AS1P01_126T01_9000000084_00608cztM0_level2.evt modeM0/AS1P01_126T01_9000000084_00608cztM0_level2_quad_clean.evt
Size (bytes)833,374,08065,096,640
Size794.8 MB 62.1 MB
Events in quadrant A6,608,755399,986
Events in quadrant B6,363,426415,552
Events in quadrant C5,752,805406,539
Events in quadrant D6,174,944391,255

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232583
B0225132
C0207052
D0219822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5095260.510304%
B5095160.314033%
C509580.157017%
D5095250.490677%

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 7251 5096 248 248 3.42% 4.87%
B 7251 5096 166 166 2.29% 3.26%
C 7251 5096 55 55 0.76% 1.08%
D 7251 5096 175 175 2.41% 3.43%

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 15 171 475659 1378.37 1552 1533 344.0
A 13 160 36660 102.12 1552 1533 344.0
A 0 238 33227 92.14 1552 1533 344.0
B 7 221 279616 777.69 1543 1549 357.6
B 4 250 79770 218.77 1543 1549 357.6
B 0 220 24266 63.53 1543 1549 357.6
C 10 19 41181 99.22 1443 1496 400.0
C 1 1 15143 34.12 1443 1496 400.0
C 7 221 13263 29.42 1443 1496 400.0
D 1 4 264571 609.02 1393 1447 432.0
D 7 143 175202 402.17 1393 1447 432.0
D 12 237 107614 245.73 1393 1447 432.0

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