ASTROSAT CZTI

Data Quality Report

Orbit 36118

Creation date: 2022-08-10T13:28:22.816881
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_069T01_9000005158_36118cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36118cztM0_level2_quad_clean.evt
Size (bytes)502,496,64047,053,440
Size479.2 MB 44.9 MB
Events in quadrant A2,574,161279,384
Events in quadrant B3,637,556273,207
Events in quadrant C2,987,652277,938
Events in quadrant D5,668,046230,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107023
B0140342
C0117712
D0204202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517390.173980%
B51732825.451382%
C51731001.933114%
D517374114.324377%

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 7267 5174 1 1 0.01% 0.02%
B 7267 5174 200 200 2.75% 3.87%
C 7267 5174 73 73 1.00% 1.41%
D 7267 5174 715 715 9.84% 13.82%

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 171414 1377.93 616 605 124.0
A 13 6 11919 91.27 616 605 124.0
A 9 143 8379 62.71 616 605 124.0
B 5 172 1001053 8766.77 599 582 114.1
B 5 236 99573 867.42 599 582 114.1
B 0 229 80008 695.98 599 582 114.1
C 0 10 287296 2076.87 596 599 138.0
C 15 214 220334 1591.79 596 599 138.0
C 9 187 108834 784.07 596 599 138.0
D 10 203 2526801 18177.1 572 556 139.0
D 1 52 487860 3506.3 572 556 139.0
D 10 118 151130 1083.43 572 556 139.0

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