ASTROSAT CZTI

Data Quality Report

Orbit 34656

Creation date: 2022-02-24T18:05:45.174480
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_008T01_9000004956_34656cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34656cztM0_level2_quad_clean.evt
Size (bytes)491,757,12048,490,560
Size469.0 MB 46.2 MB
Events in quadrant A2,498,304290,368
Events in quadrant B3,725,609270,012
Events in quadrant C2,888,242280,225
Events in quadrant D5,435,792270,264

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
A0104883
B0142142
C0113192
D0197312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509170.137498%
B50914208.249853%
C5091961.885681%
D50912985.853467%

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 7124 5092 1 1 0.01% 0.02%
B 7124 5092 281 281 3.94% 5.52%
C 7124 5092 73 73 1.02% 1.43%
D 7124 5092 239 239 3.35% 4.69%

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 46428 366.39 622 610 125.1
A 9 143 33066 259.54 622 610 125.1
A 13 6 11341 85.81 622 610 125.1
B 5 172 1037447 9158.79 589 577 113.2
B 5 255 262442 2313.08 589 577 113.2
B 4 81 35673 310.01 589 577 113.2
C 0 10 277923 2033.39 591 596 136.4
C 15 214 218094 1594.72 591 596 136.4
C 14 67 30085 216.21 591 596 136.4
D 8 195 2082713 14129.39 592 575 147.4
D 12 233 234022 1584.17 592 575 147.4
D 13 249 195945 1325.78 592 575 147.4

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