ASTROSAT CZTI

Data Quality Report

Orbit 40628

Creation date: 2024-06-27T22:18:25.998161
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/AS1A12_029T01_9000005556_40628cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40628cztM0_level2_quad_clean.evt
Size (bytes)194,656,32049,792,320
Size185.6 MB 47.5 MB
Events in quadrant A1,612,659335,325
Events in quadrant B1,767,730342,065
Events in quadrant C1,453,757331,813
Events in quadrant D2,134,208282,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065732
B072561
C061351
D083821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A302380.264638%
B3023541.786305%
C302320.066159%
D30232488.203771%

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 4485 3024 3 3 0.07% 0.10%
B 4485 3024 11 11 0.25% 0.36%
C 4485 3024 0 0 0.00% 0.00%
D 4485 3024 53 53 1.18% 1.75%

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 247372 3396.48 344 337 72.7
A 12 189 16849 227.02 344 337 72.7
A 15 223 11412 152.27 344 337 72.7
B 4 171 296862 4385.0 340 330 67.6
B 0 229 64376 947.09 340 330 67.6
B 0 190 45981 675.07 340 330 67.6
C 15 214 131217 1650.55 335 337 79.3
C 0 10 6129 73.04 335 337 79.3
C 14 254 5842 69.42 335 337 79.3
D 12 227 639146 7893.77 321 311 80.9
D 2 250 138625 1709.08 321 311 80.9
D 12 191 83815 1031.82 321 311 80.9

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