ASTROSAT CZTI

Data Quality Report

Orbit 36045

Creation date: 2022-08-10T00:34:37.556083
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_36045cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36045cztM0_level2_quad_clean.evt
Size (bytes)420,336,00052,669,440
Size400.9 MB 50.2 MB
Events in quadrant A2,556,318319,189
Events in quadrant B3,233,054311,748
Events in quadrant C3,035,903316,280
Events in quadrant D3,564,944296,509

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103923
B0126612
C0118362
D0137912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499870.140056%
B49981853.701481%
C49981402.801120%
D49981733.461385%

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 7121 4999 0 0 0.00% 0.00%
B 7121 4999 124 124 1.74% 2.48%
C 7121 4999 105 105 1.47% 2.10%
D 7121 4999 146 146 2.05% 2.92%

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 165567 1347.14 613 604 122.5
A 13 6 11764 91.14 613 604 122.5
A 13 254 8213 62.14 613 604 122.5
B 5 255 364339 3156.59 602 588 115.2
B 5 236 217036 1878.31 602 588 115.2
B 0 190 73909 636.27 602 588 115.2
C 9 187 291598 2131.89 592 597 136.5
C 15 214 210499 1537.75 592 597 136.5
C 0 10 193572 1413.75 592 597 136.5
D 12 6 472339 3284.79 590 575 143.6
D 12 235 256976 1785.26 590 575 143.6
D 13 249 196920 1367.11 590 575 143.6

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