ASTROSAT CZTI

Data Quality Report

Orbit 40492

Creation date: 2024-06-27T22:16:46.306443
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/AS1A12_022T01_9000005540_40492cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40492cztM0_level2_quad_clean.evt
Size (bytes)312,261,12084,090,240
Size297.8 MB 80.2 MB
Events in quadrant A2,704,355594,318
Events in quadrant B2,719,938598,813
Events in quadrant C2,451,982571,582
Events in quadrant D3,276,751417,879

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112963
B0114772
C0105492
D0134222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519070.134875%
B5190571.098266%
C519080.154143%
D5190120723.256262%

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 7163 5191 1 1 0.01% 0.02%
B 7163 5191 43 43 0.60% 0.83%
C 7163 5191 5 5 0.07% 0.10%
D 7163 5191 135 135 1.88% 2.60%

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 476664 4112.47 564 553 115.8
A 12 189 21194 178.29 564 553 115.8
A 2 79 10345 84.58 564 553 115.8
B 4 170 325999 3002.64 558 544 108.4
B 0 230 121187 1113.05 558 544 108.4
B 3 112 44109 401.93 558 544 108.4
C 15 214 227195 1756.89 554 557 129.0
C 9 187 23260 175.99 554 557 129.0
C 0 10 17742 133.22 554 557 129.0
D 2 250 731846 6135.13 478 464 119.2
D 12 191 226133 1893.0 478 464 119.2
D 12 227 187526 1569.15 478 464 119.2

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