ASTROSAT CZTI

Data Quality Report

Orbit 12195

Creation date: 2024-06-27T16:23:39.511435
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/AS1G08_010T03_9000001800_12195cztM0_level2.evt modeM0/AS1G08_010T03_9000001800_12195cztM0_level2_quad_clean.evt
Size (bytes)978,503,040178,329,600
Size933.2 MB 170.1 MB
Events in quadrant A6,736,3361,147,926
Events in quadrant B8,133,3731,130,780
Events in quadrant C5,896,6621,138,777
Events in quadrant D7,981,7641,078,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289864
B0331783
C0270673
D0332573

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130931300.992897%
B130935704.353471%
C13093550.420072%
D130935284.032689%

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 14749 13097 5 5 0.03% 0.04%
B 14749 13097 279 279 1.89% 2.13%
C 14749 13097 6 6 0.04% 0.05%
D 14749 13097 421 421 2.85% 3.21%

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 1 162 244509 795.92 1507 1475 305.3
A 8 15 182429 592.61 1507 1475 305.3
A 1 178 124508 402.93 1507 1475 305.3
B 4 239 1571910 5542.84 1487 1451 283.3
B 15 204 473578 1666.34 1487 1451 283.3
B 11 51 102911 358.1 1487 1451 283.3
C 15 208 148291 436.61 1462 1466 336.3
C 14 234 11980 31.26 1462 1466 336.3
C 13 61 10877 27.98 1462 1466 336.3
D 1 52 1462272 4234.79 1434 1390 345.0
D 10 157 266651 768.94 1434 1390 345.0
D 13 104 196283 564.95 1434 1390 345.0

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