ASTROSAT CZTI

Data Quality Report

Orbit 41402

Creation date: 2024-06-27T22:28:34.381308
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/AS1A12_035T01_9000005666_41402cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41402cztM0_level2_quad_clean.evt
Size (bytes)365,446,08088,516,800
Size348.5 MB 84.4 MB
Events in quadrant A3,074,943606,458
Events in quadrant B3,355,712612,992
Events in quadrant C3,141,838567,946
Events in quadrant D3,567,971544,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121483
B0131332
C0120912
D0138872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4977591.185453%
B49772034.078762%
C49772675.364678%
D49771372.752662%

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 7039 4978 40 40 0.57% 0.80%
B 7039 4978 173 173 2.46% 3.48%
C 7039 4978 258 258 3.67% 5.18%
D 7039 4978 122 122 1.73% 2.45%

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 478757 4058.69 577 566 117.8
A 13 248 343706 2912.44 577 566 117.8
A 12 189 12541 101.64 577 566 117.8
B 5 255 1071838 9661.84 572 557 110.9
B 0 229 18434 161.23 572 557 110.9
B 12 111 13674 118.3 572 557 110.9
C 0 10 742201 5744.54 555 559 129.1
C 15 214 219676 1697.21 555 559 129.1
C 0 15 14008 104.17 555 559 129.1
D 5 222 456369 3309.37 568 554 137.7
D 13 174 274570 1989.45 568 554 137.7
D 1 52 227347 1646.6 568 554 137.7

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