ASTROSAT CZTI

Data Quality Report

Orbit 42855

Creation date: 2024-06-27T22:45:02.801963
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/AS1T05_138T01_9000005828_42855cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42855cztM0_level2_quad_clean.evt
Size (bytes)374,788,80092,234,880
Size357.4 MB 88.0 MB
Events in quadrant A3,193,826620,318
Events in quadrant B2,577,765642,194
Events in quadrant C3,596,372604,930
Events in quadrant D4,055,405521,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129612
B0118652
C0143453
D0159582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5782270.466966%
B5782100.172951%
C57811973.407715%
D57814227.299775%

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 7274 5783 21 21 0.29% 0.36%
B 7274 5783 2 2 0.03% 0.03%
C 7273 5782 190 190 2.61% 3.29%
D 7273 5782 388 388 5.33% 6.71%

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 10 83 614825 4700.78 624 611 130.7
A 12 189 66624 505.22 624 611 130.7
A 15 237 58162 440.46 624 611 130.7
B 4 171 78858 644.54 624 605 121.4
B 5 255 17138 136.17 624 605 121.4
B 12 111 15452 122.29 624 605 121.4
C 12 2 820920 5749.97 608 611 142.7
C 15 214 234367 1638.52 608 611 142.7
C 14 254 104437 727.77 608 611 142.7
D 2 249 709498 4935.17 583 566 143.6
D 12 6 532760 3704.83 583 566 143.6
D 10 118 265743 1846.01 583 566 143.6

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