ASTROSAT CZTI

Data Quality Report

Orbit 39581

Creation date: 2024-06-27T22:06:25.381298
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_018T01_9000005488_39581cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39581cztM0_level2_quad_clean.evt
Size (bytes)471,902,40090,601,920
Size450.0 MB 86.4 MB
Events in quadrant A5,410,867595,726
Events in quadrant B2,544,112637,598
Events in quadrant C5,490,942556,370
Events in quadrant D3,580,519555,278

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200462
B0118241
C0202971
D0148811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56924037.080112%
B5692210.368939%
C569264311.296557%
D56921803.162333%

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 7185 5693 344 344 4.79% 6.04%
B 7185 5693 14 14 0.19% 0.25%
C 7185 5693 603 603 8.39% 10.59%
D 7185 5693 131 131 1.82% 2.30%

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 15 222 2082510 17273.23 590 576 120.5
A 10 83 450776 3735.19 590 576 120.5
A 13 248 384510 3185.4 590 576 120.5
B 5 255 149936 1273.43 600 582 117.3
B 0 230 17370 143.14 600 582 117.3
B 5 172 16570 136.32 600 582 117.3
C 9 187 1835227 14023.38 563 567 130.8
C 15 208 1193982 9121.97 563 567 130.8
C 15 214 243249 1854.96 563 567 130.8
D 12 227 1159295 8179.99 579 562 141.7
D 13 249 53869 376.32 579 562 141.7
D 12 233 53246 371.92 579 562 141.7

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