ASTROSAT CZTI

Data Quality Report

Orbit 35643

Creation date: 2022-05-06T15:25:49.657537
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_106T01_9000005102_35643cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35643cztM0_level2_quad_clean.evt
Size (bytes)831,116,16063,452,160
Size792.6 MB 60.5 MB
Events in quadrant A14,522,987238,966
Events in quadrant B3,355,744428,351
Events in quadrant C3,579,398420,206
Events in quadrant D3,307,341414,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0471373
B0138622
C0142852
D0139212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59775977100.000000%
B5977841.405387%
C59771772.961352%
D59771642.743851%

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 8905 5979 5710 5710 64.12% 95.50%
B 8905 5979 41 41 0.46% 0.69%
C 8905 5979 148 148 1.66% 2.48%
D 8905 5979 180 180 2.02% 3.01%

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 12665030 139084.21 450 441 91.1
A 10 83 96504 1054.98 450 441 91.1
A 12 189 15996 170.83 450 441 91.1
B 5 172 584992 4352.05 684 666 134.3
B 0 197 28862 210.0 684 666 134.3
B 0 189 27695 201.31 684 666 134.3
C 0 10 632314 4027.79 670 675 156.8
C 15 214 246105 1565.04 670 675 156.8
C 9 187 88823 562.1 670 675 156.8
D 10 253 569771 3484.66 669 651 163.3
D 2 153 74935 454.83 669 651 163.3
D 13 249 50521 305.35 669 651 163.3

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