ASTROSAT CZTI

Data Quality Report

Orbit 35960

Creation date: 2022-06-09T05:54:00.756211
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_080T01_9000005146_35960cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35960cztM0_level2_quad_clean.evt
Size (bytes)767,295,36056,733,120
Size731.7 MB 54.1 MB
Events in quadrant A3,068,365406,115
Events in quadrant B13,101,331159,918
Events in quadrant C3,013,084394,220
Events in quadrant D3,687,858376,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123543
B0425922
C0119572
D0144142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5418831.531931%
B5418511194.333702%
C5418500.922850%
D54181232.270210%

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 7210 5419 46 46 0.64% 0.85%
B 7210 5419 4845 4845 67.20% 89.41%
C 7210 5419 41 41 0.57% 0.76%
D 7210 5419 112 112 1.55% 2.07%

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 367255 2770.17 651 641 132.3
A 10 83 167311 1259.37 651 641 132.3
A 8 144 10234 72.49 651 641 132.3
B 5 14 3434585 56514.75 313 307 60.8
B 5 31 3411594 56136.41 313 307 60.8
B 5 15 3400823 55959.16 313 307 60.8
C 15 214 228026 1560.53 626 633 145.7
C 0 10 171190 1170.48 626 633 145.7
C 0 207 84282 574.06 626 633 145.7
D 8 195 373907 2394.85 628 609 155.9
D 2 249 299210 1915.64 628 609 155.9
D 2 250 165950 1060.73 628 609 155.9

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