ASTROSAT CZTI

Data Quality Report

Orbit 35545

Creation date: 2022-04-26T11:10:02.498985
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/AS1A11_093T01_9000005090_35545cztM0_level2.evt modeM0/AS1A11_093T01_9000005090_35545cztM0_level2_quad_clean.evt
Size (bytes)228,735,36042,917,760
Size218.1 MB 40.9 MB
Events in quadrant A1,506,734263,320
Events in quadrant B1,580,974271,580
Events in quadrant C1,785,813277,811
Events in quadrant D1,838,184262,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065142
B066901
C070761
D073671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A314940.127024%
B3149290.920927%
C3149481.524293%
D3149601.905367%

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 4612 3150 1 1 0.02% 0.03%
B 4612 3150 19 19 0.41% 0.60%
C 4612 3150 39 39 0.85% 1.24%
D 4612 3150 45 45 0.98% 1.43%

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 74679 987.5 366 359 75.3
A 13 6 8398 106.82 366 359 75.3
A 9 143 6386 80.08 366 359 75.3
B 5 172 56383 771.71 365 354 72.6
B 5 200 42239 576.9 365 354 72.6
B 4 81 15490 208.47 365 354 72.6
C 0 10 166185 1955.73 358 360 84.8
C 15 214 140487 1652.65 358 360 84.8
C 0 239 53777 630.0 358 360 84.8
D 8 195 172870 1994.34 354 345 86.5
D 10 118 96304 1109.26 354 345 86.5
D 10 199 72878 838.46 354 345 86.5

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