ASTROSAT CZTI

Data Quality Report

Orbit 33320

Creation date: 2024-06-27T20:47:31.598122
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/AS1T04_071T01_9000004782_33320cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33320cztM0_level2_quad_clean.evt
Size (bytes)562,705,92076,040,640
Size536.6 MB 72.5 MB
Events in quadrant A4,007,473500,330
Events in quadrant B4,097,397483,042
Events in quadrant C4,959,390483,220
Events in quadrant D3,625,887471,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152462
B0155571
C0183581
D0147501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51974208.081586%
B51974829.274581%
C51975149.890321%
D5197510.981335%

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 7110 5198 272 272 3.83% 5.23%
B 7110 5198 354 354 4.98% 6.81%
C 7110 5198 442 442 6.22% 8.50%
D 7110 5198 35 35 0.49% 0.67%

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 15 169 1445034 11085.73 658 646 130.3
A 3 252 9172 65.43 658 646 130.3
A 13 6 7196 50.27 658 646 130.3
B 0 219 788993 6402.65 650 635 123.1
B 5 172 512152 4154.29 650 635 123.1
B 5 200 139223 1125.54 650 635 123.1
C 1 23 1538845 10717.71 623 628 143.5
C 10 49 562662 3916.04 623 628 143.5
C 15 214 237589 1651.05 623 628 143.5
D 8 195 753471 4759.8 648 631 158.2
D 2 250 212038 1336.61 648 631 158.2
D 13 249 54648 341.52 648 631 158.2

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