ASTROSAT CZTI

Data Quality Report

Orbit 33449

Creation date: 2024-06-27T20:48:58.477614
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/AS1A11_065T07_9000004798_33449cztM0_level2.evt modeM0/AS1A11_065T07_9000004798_33449cztM0_level2_quad_clean.evt
Size (bytes)479,387,52089,475,840
Size457.2 MB 85.3 MB
Events in quadrant A2,501,808596,621
Events in quadrant B3,611,390595,070
Events in quadrant C3,148,724584,258
Events in quadrant D4,886,105551,608

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110443
B0143682
C0126802
D0184152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546240.073233%
B54623215.876968%
C5462951.739290%
D54621572.874405%

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 7193 5463 0 0 0.00% 0.00%
B 7193 5463 221 221 3.07% 4.05%
C 7193 5463 89 89 1.24% 1.63%
D 7193 5463 119 119 1.65% 2.18%

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 13 254 9327 67.1 645 631 129.6
A 13 6 6552 45.69 645 631 129.6
A 3 137 6264 43.46 645 631 129.6
B 5 172 822996 6713.22 633 617 122.5
B 5 255 191519 1558.37 633 617 122.5
B 5 200 25176 200.48 633 617 122.5
C 1 23 298582 2065.56 624 629 144.2
C 15 214 234691 1622.63 624 629 144.2
C 0 10 88013 605.79 624 629 144.2
D 8 195 1803512 11812.34 617 599 152.6
D 2 249 177496 1159.0 617 599 152.6
D 2 250 171292 1118.35 617 599 152.6

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