ASTROSAT CZTI

Data Quality Report

Orbit 34844

Creation date: 2022-03-09T10:46:10.915339
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/AS1C07_005T01_9000004992_34844cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34844cztM0_level2_quad_clean.evt
Size (bytes)670,066,56084,280,320
Size639.0 MB 80.4 MB
Events in quadrant A10,760,031282,860
Events in quadrant B3,157,932658,494
Events in quadrant C2,700,720655,418
Events in quadrant D3,351,854619,258

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351903
B0123571
C0105991
D0132691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4764419287.993283%
B47642194.596977%
C4764440.923594%
D47641122.350966%

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 6828 4763 3798 3798 55.62% 79.74%
B 6829 4766 161 161 2.36% 3.38%
C 6829 4766 35 35 0.51% 0.73%
D 6829 4766 97 97 1.42% 2.04%

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 15 169 9624348 167276.99 283 277 57.5
A 10 83 23368 401.35 283 277 57.5
A 13 254 4636 75.76 283 277 57.5
B 5 172 697559 6708.68 561 549 103.9
B 5 255 124278 1190.88 561 549 103.9
B 0 190 66769 637.36 561 549 103.9
C 15 214 217208 1702.31 562 567 127.3
C 0 10 143414 1122.46 562 567 127.3
C 8 111 56109 436.44 562 567 127.3
D 8 195 568835 4171.15 559 546 136.2
D 13 249 167015 1221.86 559 546 136.2
D 2 249 145673 1065.21 559 546 136.2

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