ASTROSAT CZTI

Data Quality Report

Orbit 16321

Creation date: 2024-06-27T17:21:00.331045
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_096T04_9000002406_16321cztM0_level2.evt modeM0/AS1A05_096T04_9000002406_16321cztM0_level2_quad_clean.evt
Size (bytes)954,360,000207,097,920
Size910.1 MB 197.5 MB
Events in quadrant A6,113,6381,356,086
Events in quadrant B8,873,3401,343,525
Events in quadrant C6,237,2401,337,204
Events in quadrant D6,773,2301,311,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272694
B0352813
C0272203
D0293633

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13374850.635562%
B133748156.093914%
C133741290.964558%
D133741681.256169%

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 15420 13378 4 4 0.03% 0.03%
B 15420 13378 434 434 2.81% 3.24%
C 15420 13378 0 0 0.00% 0.00%
D 15420 13378 92 92 0.60% 0.69%

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 15 174 57907 177.98 1572 1537 316.7
A 0 226 13851 38.88 1572 1537 316.7
A 12 194 11603 31.78 1572 1537 316.7
B 3 112 2347696 7970.48 1544 1501 294.4
B 4 173 101946 341.23 1544 1501 294.4
B 0 189 97239 325.24 1544 1501 294.4
C 14 238 237256 668.74 1522 1532 352.5
C 3 233 31317 84.5 1522 1532 352.5
C 0 207 24518 65.21 1522 1532 352.5
D 2 122 328899 888.81 1534 1492 368.4
D 12 110 327701 885.56 1534 1492 368.4
D 1 52 112555 301.5 1534 1492 368.4

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