ASTROSAT CZTI

Data Quality Report

Orbit 10898

Creation date: 2024-06-27T16:05:22.078937
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_055T02_9000001576_10898cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10898cztM0_level2_quad_clean.evt
Size (bytes)321,431,04050,074,560
Size306.5 MB 47.8 MB
Events in quadrant A3,461,184302,159
Events in quadrant B2,423,240334,761
Events in quadrant C1,608,476333,685
Events in quadrant D2,021,664316,295

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125022
B093961
C068821
D080971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A322374523.115110%
B32232417.477505%
C3223641.985728%
D32231263.909401%

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 4488 3223 519 519 11.56% 16.10%
B 4488 3223 105 105 2.34% 3.26%
C 4488 3223 1 1 0.02% 0.03%
D 4488 3223 40 40 0.89% 1.24%

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 8 5 1973287 24938.1 382 375 79.1
A 11 29 11375 139.04 382 375 79.1
A 0 226 3446 38.82 382 375 79.1
B 4 239 703235 8662.84 419 410 81.1
B 10 245 43206 527.49 419 410 81.1
B 0 219 20787 251.16 419 410 81.1
C 12 4 4263 40.58 410 412 94.9
C 14 234 4222 40.15 410 412 94.9
C 13 61 2989 27.16 410 412 94.9
D 5 97 199765 1992.14 410 397 100.1
D 13 152 76988 765.32 410 397 100.1
D 9 85 39877 394.5 410 397 100.1

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