ASTROSAT CZTI

Data Quality Report

Orbit 35538

Creation date: 2022-04-25T11:49:30.449060
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_097T09_9000005086_35538cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35538cztM0_level2_quad_clean.evt
Size (bytes)394,977,60061,513,920
Size376.7 MB 58.7 MB
Events in quadrant A2,488,179389,731
Events in quadrant B2,588,389400,566
Events in quadrant C2,945,545380,674
Events in quadrant D3,610,204351,240

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102542
B0106362
C0114982
D0138942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4846140.288898%
B4846260.536525%
C4846941.939744%
D48461603.301692%

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 6970 4847 4 4 0.06% 0.08%
B 6970 4847 17 17 0.24% 0.35%
C 6970 4847 77 77 1.10% 1.59%
D 6970 4847 170 170 2.44% 3.51%

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 125466 1039.8 599 589 120.1
A 9 143 22771 184.7 599 589 120.1
A 15 169 22477 182.25 599 589 120.1
B 5 255 72692 635.62 600 585 113.4
B 5 236 66766 583.38 600 585 113.4
B 5 172 47579 414.25 600 585 113.4
C 0 10 337315 2491.27 581 587 135.2
C 15 214 216654 1598.57 581 587 135.2
C 0 207 81772 600.65 581 587 135.2
D 12 235 960875 6873.54 570 554 139.7
D 8 195 203161 1450.17 570 554 139.7
D 2 250 123244 878.16 570 554 139.7

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