ASTROSAT CZTI

Data Quality Report

Orbit 35677

Creation date: 2022-09-12T16:43:06.415646
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_029T03_9000005108_35677cztM0_level2.evt modeM0/AS1A09_029T03_9000005108_35677cztM0_level2_quad_clean.evt
Size (bytes)435,738,24086,227,200
Size415.6 MB 82.2 MB
Events in quadrant A2,765,115567,717
Events in quadrant B4,104,768563,152
Events in quadrant C2,870,643558,654
Events in quadrant D3,082,731537,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115744
B0158083
C0119021
D0127663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5485130.237010%
B54852524.594348%
C5486591.075465%
D54851372.497721%

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 7159 5487 5 5 0.07% 0.09%
B 7159 5487 170 170 2.37% 3.10%
C 7159 5487 40 40 0.56% 0.73%
D 7159 5487 128 128 1.79% 2.33%

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 118237 903.29 639 627 130.2
A 15 169 117290 896.01 639 627 130.2
A 7 16 50013 379.3 639 627 130.2
B 5 172 725896 6016.62 622 606 120.5
B 5 31 671439 5564.87 622 606 120.5
B 5 255 78542 646.52 622 606 120.5
C 15 214 228241 1598.26 610 613 142.4
C 0 10 202094 1414.67 610 613 142.4
C 9 187 34757 239.74 610 613 142.4
D 10 118 236746 1563.81 615 596 151.0
D 8 230 114160 752.03 615 596 151.0
D 13 249 82365 541.48 615 596 151.0

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