ASTROSAT CZTI

Data Quality Report

Orbit 34486

Creation date: 2022-02-13T06:54:00.317450
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/AS1A05_118T04_9000004926_34486cztM0_level2.evt modeM0/AS1A05_118T04_9000004926_34486cztM0_level2_quad_clean.evt
Size (bytes)368,879,04045,734,400
Size351.8 MB 43.6 MB
Events in quadrant A2,097,608272,168
Events in quadrant B3,205,733274,185
Events in quadrant C2,205,782276,001
Events in quadrant D3,366,249256,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090692
B0124931
C092081
D0130141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4351170.390715%
B435150811.675477%
C4351130.298782%
D43512686.159504%

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 5664 4352 8 8 0.14% 0.18%
B 5664 4352 283 283 5.00% 6.50%
C 5664 4352 4 4 0.07% 0.09%
D 5664 4352 215 215 3.80% 4.94%

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 52028 495.1 512 502 104.1
A 9 143 30635 289.54 512 502 104.1
A 10 83 21206 198.94 512 502 104.1
B 5 172 1045099 11191.38 480 468 93.3
B 0 189 129252 1379.69 480 468 93.3
B 5 255 59413 631.49 480 468 93.3
C 15 214 182214 1580.04 495 499 115.0
C 14 67 43852 376.96 495 499 115.0
C 0 10 35890 307.73 495 499 115.0
D 8 195 623804 5167.38 485 469 120.6
D 12 79 336258 2783.65 485 469 120.6
D 1 52 188164 1555.97 485 469 120.6

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