ASTROSAT CZTI

Data Quality Report

Orbit 09999

Creation date: 2024-06-27T15:53:28.536779
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/AS1G07_002T02_9000001432_09999cztM0_level2.evt modeM0/AS1G07_002T02_9000001432_09999cztM0_level2_quad_clean.evt
Size (bytes)284,664,96049,599,360
Size271.5 MB 47.3 MB
Events in quadrant A2,043,807313,511
Events in quadrant B1,832,431322,587
Events in quadrant C1,711,314315,611
Events in quadrant D2,791,454298,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0742
C0740
D0742

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08557135
B0790873
C0759988
D010626113

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3535701.980198%
B3553531.491697%
C3545391.100141%
D35472637.414717%

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 4808 3586 24 24 0.50% 0.67%
B 4807 3584 1 1 0.02% 0.03%
C 4808 3587 0 0 0.00% 0.00%
D 4808 3585 202 202 4.20% 5.63%

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 14 111 233962 2560.07 446 437 91.2
A 8 15 94217 1028.08 446 437 91.2
A 0 226 4056 39.67 446 437 91.2
B 4 239 27205 307.6 450 440 87.0
B 5 94 23749 267.88 450 440 87.0
B 0 214 9506 104.19 450 440 87.0
C 13 61 3136 26.19 438 442 102.9
C 8 222 1799 13.19 438 442 102.9
C 14 67 1692 12.15 438 442 102.9
D 12 233 670652 6154.43 426 416 108.9
D 8 195 305979 2805.83 426 416 108.9
D 2 16 90039 822.96 426 416 108.9

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