ASTROSAT CZTI

Data Quality Report

Orbit 40053

Creation date: 2024-06-27T22:11:44.590675
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_054T03_9000005516_40053cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40053cztM0_level2_quad_clean.evt
Size (bytes)373,688,64093,427,200
Size356.4 MB 89.1 MB
Events in quadrant A3,201,720617,727
Events in quadrant B2,427,342665,069
Events in quadrant C4,064,119614,648
Events in quadrant D3,723,828557,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128182
B0107781
C0156551
D0149041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53411923.594832%
B534170.131062%
C53412524.718218%
D53412755.148849%

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 9047 5343 129 129 1.43% 2.41%
B 9047 5343 0 0 0.00% 0.00%
C 9047 5343 209 209 2.31% 3.91%
D 9047 5343 271 271 3.00% 5.07%

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 13 248 433583 3598.42 592 582 120.3
A 10 83 431666 3582.49 592 582 120.3
A 9 143 24849 201.67 592 582 120.3
B 0 230 31738 265.26 606 589 117.4
B 12 111 14525 118.68 606 589 117.4
B 11 111 13249 107.81 606 589 117.4
C 9 187 1493972 10898.44 586 592 137.0
C 15 214 217923 1586.05 586 592 137.0
C 14 254 32165 230.41 586 592 137.0
D 12 227 761900 5405.73 576 560 140.8
D 13 249 364555 2584.47 576 560 140.8
D 2 250 195417 1383.54 576 560 140.8

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