ASTROSAT CZTI

Data Quality Report

Orbit 40512

Creation date: 2024-06-27T22:17:00.361946
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_097T02_9000005542_40512cztM0_level2.fits modeM0/AS1A12_097T02_9000005542_40512cztM0_level2_quad_clean.evt
Size (bytes)879,960,960213,655,680
Size839.2 MB 203.8 MB
Events in quadrant A7,499,1151,464,457
Events in quadrant B8,299,2801,493,943
Events in quadrant C6,702,2791,445,649
Events in quadrant D9,009,7081,117,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307384
B0339773
C0285453
D0365343

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13700540.394161%
B137002381.737226%
C13700290.211679%
D13700222616.248175%

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 17638 13703 38 38 0.22% 0.28%
B 17638 13703 143 143 0.81% 1.04%
C 17638 13703 22 22 0.12% 0.16%
D 17638 13702 676 676 3.83% 4.93%

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 1091495 3538.31 1505 1472 308.1
A 12 189 389284 1258.87 1505 1472 308.1
A 6 10 61215 193.93 1505 1472 308.1
B 4 171 1005216 3454.21 1494 1454 290.6
B 3 112 829336 2848.96 1494 1454 290.6
B 0 183 160173 546.19 1494 1454 290.6
C 15 214 581930 1685.16 1471 1483 344.4
C 14 254 240974 695.29 1471 1483 344.4
C 9 187 69445 197.31 1471 1483 344.4
D 12 227 1624807 4831.35 1344 1306 336.0
D 2 250 1171342 3481.89 1344 1306 336.0
D 12 191 422985 1254.87 1344 1306 336.0

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