ASTROSAT CZTI

Data Quality Report

Orbit 20605

Creation date: 2024-06-27T18:17:19.485857
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/AS1A06_003T04_9000003046_20605cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20605cztM0_level2_quad_clean.evt
Size (bytes)972,239,040159,785,280
Size927.2 MB 152.4 MB
Events in quadrant A5,787,6311,014,536
Events in quadrant B6,419,9421,036,953
Events in quadrant C6,120,252999,373
Events in quadrant D10,271,819924,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257292
B0276682
C0265592
D0391152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12498920.736118%
B124991611.288103%
C124991240.992079%
D1249911859.480758%

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 13778 12500 6 6 0.04% 0.05%
B 13779 12501 37 37 0.27% 0.30%
C 13779 12501 0 0 0.00% 0.00%
D 13779 12501 899 899 6.52% 7.19%

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 5 16 80160 265.9 1472 1441 296.0
A 15 174 17515 54.3 1472 1441 296.0
A 12 16 16555 51.05 1472 1441 296.0
B 7 220 321291 1129.29 1471 1435 283.2
B 0 244 73646 254.95 1471 1435 283.2
B 0 190 70552 244.03 1471 1435 283.2
C 8 208 370292 1110.06 1412 1417 332.3
C 14 238 218531 653.36 1412 1417 332.3
C 3 233 28548 81.65 1412 1417 332.3
D 5 222 2977584 8846.58 1380 1340 336.4
D 1 52 712861 2114.92 1380 1340 336.4
D 1 20 631102 1871.9 1380 1340 336.4

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