ASTROSAT CZTI

Data Quality Report

Orbit 36320

Creation date: 2022-06-17T03:04:38.747197
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/AS1A11_089T02_9000005188_36320cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36320cztM0_level2_quad_clean.evt
Size (bytes)452,839,68058,291,200
Size431.9 MB 55.6 MB
Events in quadrant A2,517,015377,169
Events in quadrant B4,907,500347,560
Events in quadrant C2,716,474350,395
Events in quadrant D3,240,540345,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105323
B0178737
C0110402
D0128492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489870.142915%
B489683617.075163%
C48981392.837893%
D48981994.062883%

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 7051 4899 2 2 0.03% 0.04%
B 7051 4897 742 742 10.52% 15.15%
C 7051 4899 120 120 1.70% 2.45%
D 7051 4899 189 189 2.68% 3.86%

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 184365 1588.77 579 569 115.7
A 12 189 66142 566.83 579 569 115.7
A 13 6 9066 73.45 579 569 115.7
B 5 172 1517818 15146.72 530 518 100.2
B 4 171 752791 7509.7 530 518 100.2
B 5 236 365466 3643.16 530 518 100.2
C 0 10 381808 3004.35 544 547 126.9
C 15 214 203881 1602.28 544 547 126.9
C 0 207 5481 38.88 544 547 126.9
D 12 6 551050 4107.56 544 528 134.0
D 2 250 196114 1459.31 544 528 134.0
D 13 171 175355 1304.42 544 528 134.0

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