ASTROSAT CZTI

Data Quality Report

Orbit 08739

Creation date: 2024-06-27T15:36:33.489736
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_013T02_9000001216_08739cztM0_level2.evt modeM0/AS1G07_013T02_9000001216_08739cztM0_level2_quad_clean.evt
Size (bytes)217,514,88047,396,160
Size207.4 MB 45.2 MB
Events in quadrant A1,604,433305,787
Events in quadrant B1,562,042311,095
Events in quadrant C1,679,406301,865
Events in quadrant D1,527,140293,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068442
B066751
C070181
D067351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3127652.078670%
B3127511.630956%
C3127662.110649%
D3127621.982731%

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 4232 3127 5 5 0.12% 0.16%
B 4232 3127 0 0 0.00% 0.00%
C 4232 3127 21 21 0.50% 0.67%
D 4232 3127 4 4 0.09% 0.13%

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 13 251 97165 1219.74 386 378 79.4
A 15 174 16548 203.78 386 378 79.4
A 5 16 5678 66.79 386 378 79.4
B 0 214 15575 202.36 388 380 75.1
B 0 219 9277 118.49 388 380 75.1
B 4 48 7702 97.51 388 380 75.1
C 4 254 120909 1375.91 375 377 87.6
C 1 16 53777 609.58 375 377 87.6
C 14 234 31145 351.23 375 377 87.6
D 2 152 34870 344.13 372 363 100.3
D 7 71 27255 268.19 372 363 100.3
D 2 14 20604 201.86 372 363 100.3

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