ASTROSAT CZTI

Data Quality Report

Orbit 12581

Creation date: 2024-06-27T16:29:31.564785
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/AS1A04_130T04_9000001872_12581cztM0_level2.evt modeM0/AS1A04_130T04_9000001872_12581cztM0_level2_quad_clean.evt
Size (bytes)866,983,680165,084,480
Size826.8 MB 157.4 MB
Events in quadrant A5,806,0081,036,686
Events in quadrant B7,175,5181,057,043
Events in quadrant C5,872,8311,045,587
Events in quadrant D6,555,959996,542

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258404
B0298113
C0261893
D0282553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125061080.863585%
B125063953.158484%
C12506920.735647%
D125061811.447305%

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 14117 12510 3 3 0.02% 0.02%
B 14117 12508 182 182 1.29% 1.46%
C 14117 12510 34 34 0.24% 0.27%
D 14117 12510 112 112 0.79% 0.90%

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 12 96 34720 110.02 1494 1462 302.3
A 12 189 26824 83.9 1494 1462 302.3
A 0 226 13347 39.32 1494 1462 302.3
B 4 239 694926 2442.59 1492 1456 283.9
B 3 64 407765 1431.13 1492 1456 283.9
B 11 51 117681 409.38 1492 1456 283.9
C 15 208 205454 609.35 1452 1460 334.8
C 13 61 10542 27.13 1452 1460 334.8
C 8 222 4924 10.35 1452 1460 334.8
D 1 52 887953 2562.41 1436 1396 346.0
D 13 249 142124 406.75 1436 1396 346.0
D 2 234 43429 121.49 1436 1396 346.0

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