ASTROSAT CZTI

Data Quality Report

Orbit 39155

Creation date: 2024-06-27T22:01:11.202194
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_054T02_9000005444_39155cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39155cztM0_level2_quad_clean.evt
Size (bytes)317,292,48091,607,040
Size302.6 MB 87.4 MB
Events in quadrant A3,239,502626,890
Events in quadrant B2,364,606640,188
Events in quadrant C2,488,289597,704
Events in quadrant D3,257,173553,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125943
B0102652
C0103272
D0129872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50771122.206027%
B507770.137877%
C507730.059090%
D5077981.930274%

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 6989 5078 111 111 1.59% 2.19%
B 6989 5078 1 1 0.01% 0.02%
C 6989 5078 0 0 0.00% 0.00%
D 6989 5078 87 87 1.24% 1.71%

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 2 79 468160 3850.07 599 587 121.4
A 10 83 417646 3434.13 599 587 121.4
A 9 143 26528 213.6 599 587 121.4
B 5 172 23947 205.79 591 576 113.6
B 12 111 13951 117.77 591 576 113.6
B 11 111 12904 108.55 591 576 113.6
C 15 214 216032 1616.63 572 575 133.3
C 9 187 25030 183.49 572 575 133.3
C 0 10 5106 34.0 572 575 133.3
D 12 235 373655 2632.82 577 560 141.7
D 2 249 309691 2181.45 577 560 141.7
D 12 227 144268 1014.11 577 560 141.7

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