ASTROSAT CZTI

Data Quality Report

Orbit 26360

Creation date: 2024-06-27T19:28:09.570475
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/AS1A09_008T02_9000003810_26360cztM0_level2.evt modeM0/AS1A09_008T02_9000003810_26360cztM0_level2_quad_clean.evt
Size (bytes)409,780,80076,587,840
Size390.8 MB 73.0 MB
Events in quadrant A2,194,630512,480
Events in quadrant B2,122,372533,752
Events in quadrant C2,381,351513,422
Events in quadrant D5,419,863456,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092310
B089980
C095970
D0190750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4297451.047242%
B4297180.418897%
C4297831.931580%
D429782819.269258%

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 5597 4298 18 18 0.32% 0.42%
B 5597 4298 0 0 0.00% 0.00%
C 5597 4298 19 19 0.34% 0.44%
D 5597 4298 667 667 11.92% 15.52%

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 0 13 137535 1283.74 532 522 106.7
A 13 254 6609 57.03 532 522 106.7
A 6 16 5223 44.05 532 522 106.7
B 0 230 32672 318.33 534 520 101.0
B 12 111 11712 110.81 534 520 101.0
B 11 111 10454 98.35 534 520 101.0
C 3 233 102337 841.82 521 524 120.9
C 4 254 99098 815.04 521 524 120.9
C 14 238 84141 691.37 521 524 120.9
D 7 80 2879083 24884.67 490 477 115.7
D 1 52 527993 4560.21 490 477 115.7
D 11 176 135904 1170.73 490 477 115.7

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