ASTROSAT CZTI

Data Quality Report

Orbit 35117

Creation date: 2022-03-28T18:41:08.531496
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/AS1T05_015T01_9000005026_35117cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35117cztM0_level2_quad_clean.evt
Size (bytes)812,926,08055,105,920
Size775.3 MB 52.6 MB
Events in quadrant A9,217,083266,491
Events in quadrant B2,981,497383,758
Events in quadrant C4,791,262309,807
Events in quadrant D7,283,670346,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310463
B0120182
C0178902
D0252922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5153284755.249369%
B5153460.892684%
C515372914.147099%
D515354710.615176%

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 7246 5154 2481 2481 34.24% 48.14%
B 7246 5154 25 25 0.35% 0.49%
C 7246 5154 649 649 8.96% 12.59%
D 7246 5154 563 563 7.77% 10.92%

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 15 169 7145332 68922.82 518 508 103.7
A 10 83 68154 652.55 518 508 103.7
A 13 254 6246 55.35 518 508 103.7
B 5 172 150809 1174.29 693 678 127.8
B 0 189 76053 589.56 693 678 127.8
B 4 232 19071 143.87 693 678 127.8
C 14 128 1719646 12042.89 631 638 142.7
C 0 10 225402 1574.63 631 638 142.7
C 15 214 200648 1401.21 631 638 142.7
D 8 195 4358219 26872.58 671 656 162.2
D 13 249 61461 374.98 671 656 162.2
D 14 52 55744 339.72 671 656 162.2

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