ASTROSAT CZTI

Data Quality Report

Orbit 37886

Creation date: 2024-06-27T21:45:43.691843
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/AS1C07_001T12_9000005352_37886cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37886cztM0_level2_quad_clean.evt
Size (bytes)442,028,16073,365,120
Size421.6 MB 70.0 MB
Events in quadrant A2,804,849491,004
Events in quadrant B3,277,463473,960
Events in quadrant C2,775,927458,856
Events in quadrant D4,157,984415,782

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118223
B0134962
C0116432
D0160782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5452250.458547%
B54522384.365371%
C5452440.807043%
D54524007.336757%

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 7155 5453 8 8 0.11% 0.15%
B 7155 5453 195 195 2.73% 3.58%
C 7155 5453 40 40 0.56% 0.73%
D 7155 5453 342 342 4.78% 6.27%

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 360285 2966.04 599 590 121.3
A 12 227 45440 369.83 599 590 121.3
A 13 248 35197 285.37 599 590 121.3
B 5 172 837247 7490.88 583 569 111.7
B 0 213 44779 395.82 583 569 111.7
B 0 183 44456 392.93 583 569 111.7
C 15 214 233433 1713.01 582 584 135.9
C 0 10 159923 1172.22 582 584 135.9
C 14 254 80499 587.91 582 584 135.9
D 2 249 549774 3951.08 572 556 139.0
D 2 250 343036 2463.8 572 556 139.0
D 10 246 272627 1957.28 572 556 139.0

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