ASTROSAT CZTI

Data Quality Report

Orbit 36060

Creation date: 2022-08-10T03:11:01.856599
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/AS1T04_069T01_9000005158_36060cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36060cztM0_level2_quad_clean.evt
Size (bytes)607,965,12052,560,000
Size579.8 MB 50.1 MB
Events in quadrant A2,516,750331,844
Events in quadrant B4,020,219322,794
Events in quadrant C8,246,964274,933
Events in quadrant D3,288,060308,589

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104093
B0152502
C0278242
D0130262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503150.099384%
B50313346.638839%
C5031207541.244285%
D50311583.140529%

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 7124 5032 0 0 0.00% 0.00%
B 7123 5031 220 220 3.09% 4.37%
C 7124 5031 2072 2072 29.08% 41.18%
D 7124 5032 127 127 1.78% 2.52%

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 167427 1348.14 607 593 123.8
A 13 254 7708 57.49 607 593 123.8
A 3 137 6101 44.51 607 593 123.8
B 5 236 1367551 12153.98 590 576 112.5
B 0 213 80507 710.68 590 576 112.5
B 5 172 72652 640.84 590 576 112.5
C 9 187 5987087 54468.14 474 478 109.9
C 15 214 173677 1575.82 474 478 109.9
C 0 10 168001 1524.18 474 478 109.9
D 12 17 259687 1831.82 582 566 141.5
D 12 6 220368 1553.86 582 566 141.5
D 12 227 175854 1239.18 582 566 141.5

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