ASTROSAT CZTI

Data Quality Report

Orbit 35565

Creation date: 2022-04-27T03:49:21.924519
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/AS1T05_026T01_9000005092_35565cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35565cztM0_level2_quad_clean.evt
Size (bytes)431,818,56089,029,440
Size411.8 MB 84.9 MB
Events in quadrant A3,192,561573,351
Events in quadrant B3,144,272586,584
Events in quadrant C3,284,698607,071
Events in quadrant D3,114,261576,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130343
B0124832
C0128982
D0124462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5028240.477327%
B50282545.051710%
C50281843.659507%
D50281142.267303%

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 7061 5029 10 10 0.14% 0.20%
B 7061 5029 199 199 2.82% 3.96%
C 7061 5029 117 117 1.66% 2.33%
D 7061 5029 83 83 1.18% 1.65%

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 676250 5621.04 603 593 120.2
A 10 83 131625 1090.1 603 593 120.2
A 7 192 30973 252.74 603 593 120.2
B 5 172 457549 4103.93 600 586 111.3
B 5 200 272960 2446.16 600 586 111.3
B 0 189 22519 196.98 600 586 111.3
C 0 10 634274 4590.57 607 614 138.0
C 15 214 223725 1616.34 607 614 138.0
C 3 233 31064 220.6 607 614 138.0
D 13 249 296186 2059.45 601 587 143.5
D 8 195 207434 1441.11 601 587 143.5
D 2 250 64549 445.63 601 587 143.5

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