ASTROSAT CZTI

Data Quality Report

Orbit 36143

Creation date: 2022-08-10T19:59:13.083177
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/AS1T04_069T01_9000005158_36143cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36143cztM0_level2_quad_clean.evt
Size (bytes)420,773,76064,509,120
Size401.3 MB 61.5 MB
Events in quadrant A2,566,465412,419
Events in quadrant B3,310,249409,911
Events in quadrant C2,743,522395,338
Events in quadrant D3,771,877373,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108483
B0132022
C0112102
D0146632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5163100.193686%
B51631953.776874%
C5163761.472012%
D51632615.055200%

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 7076 5164 3 3 0.04% 0.06%
B 7076 5164 133 133 1.88% 2.58%
C 7076 5164 55 55 0.78% 1.07%
D 7076 5164 239 239 3.38% 4.63%

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 174989 1405.5 612 602 124.1
A 13 254 9349 70.5 612 602 124.1
A 8 144 9344 70.46 612 602 124.1
B 5 172 655984 5697.81 603 588 115.0
B 4 171 174440 1511.42 603 588 115.0
B 4 232 35474 303.29 603 588 115.0
C 0 10 223296 1627.64 585 590 136.8
C 15 214 217540 1585.57 585 590 136.8
C 1 23 14928 104.79 585 590 136.8
D 12 17 565796 4040.78 573 556 139.9
D 1 52 306527 2187.32 573 556 139.9
D 2 249 190417 1357.28 573 556 139.9

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