ASTROSAT CZTI

Data Quality Report

Orbit 41980

Creation date: 2024-06-27T22:35:17.828454
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_104T01_9000005728_41980cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41980cztM0_level2_quad_clean.evt
Size (bytes)302,719,68088,021,440
Size288.7 MB 83.9 MB
Events in quadrant A3,170,867585,583
Events in quadrant B2,334,476610,917
Events in quadrant C2,376,010584,009
Events in quadrant D2,924,307525,169

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125653
B0104332
C0103112
D0124382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5129631.228310%
B512930.058491%
C512930.058491%
D51291302.534607%

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 7072 5130 71 71 1.00% 1.38%
B 7072 5130 0 0 0.00% 0.00%
C 7072 5130 0 0 0.00% 0.00%
D 7072 5130 128 128 1.81% 2.50%

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 511247 4462.52 564 553 114.4
A 15 223 445659 3889.4 564 553 114.4
A 2 79 30475 261.46 564 553 114.4
B 0 156 49328 451.58 565 550 108.0
B 0 190 31802 289.33 565 550 108.0
B 5 255 17089 153.12 565 550 108.0
C 15 214 219857 1714.36 550 555 127.9
C 8 79 6589 47.17 550 555 127.9
C 7 220 4053 27.35 550 555 127.9
D 2 249 339376 2553.54 540 526 132.7
D 13 249 210249 1580.45 540 526 132.7
D 12 6 166168 1248.26 540 526 132.7

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