ASTROSAT CZTI

Data Quality Report

Orbit 41142

Creation date: 2024-06-27T22:24:57.661482
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_052T04_9000005602_41142cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41142cztM0_level2_quad_clean.evt
Size (bytes)364,464,00092,505,600
Size347.6 MB 88.2 MB
Events in quadrant A2,892,476646,851
Events in quadrant B4,634,560589,530
Events in quadrant C2,749,461618,206
Events in quadrant D2,809,140581,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115653
B0171172
C0112362
D0117422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5209140.268766%
B520970013.438280%
C5209731.401421%
D5209520.998272%

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 7331 5210 2 2 0.03% 0.04%
B 7331 5210 534 534 7.28% 10.25%
C 7331 5210 67 67 0.91% 1.29%
D 7331 5210 42 42 0.57% 0.81%

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 506030 4110.19 611 598 123.0
A 2 79 12431 96.22 611 598 123.0
A 13 254 8657 65.53 611 598 123.0
B 0 245 2110298 19368.06 573 558 108.9
B 0 186 207401 1898.88 573 558 108.9
B 0 190 59159 537.98 573 558 108.9
C 15 214 222562 1652.11 584 588 134.4
C 0 10 218962 1625.31 584 588 134.4
C 9 54 22027 159.57 584 588 134.4
D 13 249 246525 1720.18 593 577 143.0
D 2 16 123613 860.52 593 577 143.0
D 2 249 63841 442.47 593 577 143.0

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