ASTROSAT CZTI

Data Quality Report

Orbit 29547

Creation date: 2024-06-27T20:05:16.554834
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/AS1A10_073T07_9000004254_29547cztM0_level2.evt modeM0/AS1A10_073T07_9000004254_29547cztM0_level2_quad_clean.evt
Size (bytes)1,200,124,800151,554,240
Size1.1 GB 144.5 MB
Events in quadrant A5,762,906972,372
Events in quadrant B5,907,5661,003,105
Events in quadrant C6,291,093951,838
Events in quadrant D17,590,237846,372

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244302
B0248562
C0254492
D0605482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117871641.391363%
B117882101.781473%
C117886685.666780%
D11787249921.201323%

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 13017 11789 1 1 0.01% 0.01%
B 13018 11790 17 17 0.13% 0.14%
C 13018 11790 5 5 0.04% 0.04%
D 13017 11789 2060 2060 15.83% 17.47%

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 0 13 97138 323.0 1466 1433 296.3
A 13 254 23181 73.4 1466 1433 296.3
A 3 137 14620 44.51 1466 1433 296.3
B 5 255 69572 245.64 1452 1414 277.5
B 0 156 58878 207.1 1452 1414 277.5
B 12 111 34250 118.34 1452 1414 277.5
C 14 238 330147 1004.51 1401 1411 327.3
C 3 233 311239 946.73 1401 1411 327.3
C 14 254 150068 454.25 1401 1411 327.3
D 8 195 10130366 31452.25 1340 1305 322.0
D 7 238 1406637 4363.77 1340 1305 322.0
D 7 80 449866 1392.85 1340 1305 322.0

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