ASTROSAT CZTI

Data Quality Report

Orbit 39171

Creation date: 2024-06-27T22:01:21.389443
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_054T02_9000005444_39171cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39171cztM0_level2_quad_clean.evt
Size (bytes)424,503,360100,667,520
Size404.8 MB 96.0 MB
Events in quadrant A3,104,620713,515
Events in quadrant B2,617,655720,443
Events in quadrant C2,691,037667,490
Events in quadrant D6,885,744573,296

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123472
B0108921
C0109041
D0242541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5340340.636704%
B534060.112360%
C534030.056180%
D534073713.801498%

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 7402 5341 20 20 0.27% 0.37%
B 7402 5341 0 0 0.00% 0.00%
C 7402 5341 0 0 0.00% 0.00%
D 7402 5341 742 742 10.02% 13.89%

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 442711 3361.76 657 646 131.5
A 2 79 51479 386.57 657 646 131.5
A 15 254 39060 292.13 657 646 131.5
B 0 213 40722 334.48 644 628 119.9
B 5 172 20109 162.52 644 628 119.9
B 12 111 14807 118.29 644 628 119.9
C 15 214 224263 1553.43 624 629 144.0
C 9 187 23482 158.74 624 629 144.0
C 0 10 4454 26.57 624 629 144.0
D 12 235 3314288 22213.56 612 596 149.2
D 2 249 535048 3582.73 612 596 149.2
D 12 233 157387 1051.06 612 596 149.2

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