ASTROSAT CZTI

Data Quality Report

Orbit 40126

Creation date: 2024-06-27T22:12:37.938853
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_004T01_9000005520_40126cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40126cztM0_level2_quad_clean.evt
Size (bytes)450,944,64087,733,440
Size430.1 MB 83.7 MB
Events in quadrant A2,791,003621,531
Events in quadrant B2,513,663645,317
Events in quadrant C6,794,722495,358
Events in quadrant D4,196,282536,750

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114343
B0108632
C0236582
D0160012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5104160.313480%
B5104330.646552%
C5104129825.431034%
D51044077.974138%

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 7077 5105 7 7 0.10% 0.14%
B 7077 5105 13 13 0.18% 0.25%
C 7077 5105 1293 1293 18.27% 25.33%
D 7077 5105 431 431 6.09% 8.44%

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 445283 3721.23 582 573 119.5
A 6 10 78233 649.84 582 573 119.5
A 12 189 12014 95.74 582 573 119.5
B 4 171 140684 1245.52 585 572 112.5
B 5 255 54284 477.47 585 572 112.5
B 12 111 13888 118.37 585 572 112.5
C 9 187 4397955 35876.91 522 527 122.6
C 15 214 193062 1570.82 522 527 122.6
C 0 10 90969 737.88 522 527 122.6
D 12 227 1473799 10695.18 558 545 137.7
D 2 249 175479 1269.94 558 545 137.7
D 13 249 100428 725.11 558 545 137.7

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