ASTROSAT CZTI

Data Quality Report

Orbit 20231004_A09_143T01_9000005870_level2

Creation date: 2023-10-07T11:51:01.268295
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/AS1A09_143T01_9000005870cztM0_level2.fits modeM0/AS1A09_143T01_9000005870cztM0_level2_quad_clean.evt
Size (bytes)952,355,5201,216,584,000
Size908.2 MB 1.1 GB
Events in quadrant A5,626,4367,567,153
Events in quadrant B5,459,1367,746,783
Events in quadrant C5,583,9327,432,364
Events in quadrant D4,764,6606,696,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022100
B022100
C022100
D022100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04230
B04230
C04230
D04230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02517270
B02280120
C02293710
D02667650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10806320091.859101%
B1080635680.525619%
C1080613130.289651%
D10806339353.641394%

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 150364 107955 0 0 0.00% 0.00%
B 150364 108053 0 0 0.00% 0.00%
C 150364 108057 0 0 0.00% 0.00%
D 150364 107871 0 0 0.00% 0.00%

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 7 110 4653 8.76 1468 1375 374.0
A 9 19 4601 8.62 1468 1375 374.0
A 0 29 4588 8.59 1468 1375 374.0
B 2 9 4655 11.77 1441 1373 278.9
B 3 80 3885 9.01 1441 1373 278.9
B 5 128 3873 8.96 1441 1373 278.9
C 1 81 4611 8.58 1477 1384 376.2
C 1 80 4483 8.24 1477 1384 376.2
C 3 203 4308 7.77 1477 1384 376.2
D 7 3 3524 6.29 1362 1240 363.1
D 10 189 3509 6.25 1362 1240 363.1
D 4 160 3447 6.08 1362 1240 363.1

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