ASTROSAT CZTI

Data Quality Report

Orbit 34895

Creation date: 2022-03-12T23:20:45.141593
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/AS1T04_077T01_9000004994_34895cztM0_level2.evt modeM0/AS1T04_077T01_9000004994_34895cztM0_level2_quad_clean.evt
Size (bytes)258,989,76059,886,720
Size247.0 MB 57.1 MB
Events in quadrant A1,494,046404,538
Events in quadrant B1,737,224407,092
Events in quadrant C1,647,931398,459
Events in quadrant D2,741,292371,655

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066811
B072801
C068501
D0103961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A326620.061237%
B3266300.918555%
C3266190.581751%
D32661283.919167%

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 3266 3266 0 0 0.00% 0.00%
B 3266 3266 21 21 0.64% 0.64%
C 3266 3266 16 16 0.49% 0.49%
D 3266 3266 102 102 3.12% 3.12%

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 30912 399.61 376 369 76.4
A 13 254 4828 58.34 376 369 76.4
A 13 6 4345 52.02 376 369 76.4
B 5 172 86643 1175.74 371 361 73.4
B 0 190 84223 1142.76 371 361 73.4
B 4 171 27818 374.15 371 361 73.4
C 15 214 147272 1693.24 367 369 86.8
C 0 10 54590 624.97 367 369 86.8
C 14 67 8628 95.2 367 369 86.8
D 8 195 577420 6455.78 364 354 89.4
D 7 223 276483 3089.12 364 354 89.4
D 13 249 142741 1592.92 364 354 89.4

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