ASTROSAT CZTI

Data Quality Report

Orbit 36827

Creation date: 2024-06-27T21:32:07.264285
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/AS1A11_075T01_9000005244_36827cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36827cztM0_level2_quad_clean.evt
Size (bytes)589,783,68073,995,840
Size562.5 MB 70.6 MB
Events in quadrant A2,483,918486,372
Events in quadrant B8,965,020441,063
Events in quadrant C2,917,233495,212
Events in quadrant D3,160,620470,414

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105443
B0300432
C0117212
D0129652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4943110.222537%
B4943222444.992919%
C49431272.569290%
D49431302.629982%

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 7067 4944 5 5 0.07% 0.10%
B 7067 4943 2256 2256 31.92% 45.64%
C 7067 4944 113 113 1.60% 2.29%
D 7067 4944 147 147 2.08% 2.97%

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 204403 1803.43 559 550 113.0
A 9 143 92210 810.89 559 550 113.0
A 13 6 9558 79.69 559 550 113.0
B 12 1 6232335 65160.65 510 498 95.6
B 5 200 318781 3327.99 510 498 95.6
B 5 255 104792 1090.5 510 498 95.6
C 0 207 234543 1849.38 545 549 126.5
C 15 214 210585 1660.03 545 549 126.5
C 14 254 164860 1298.64 545 549 126.5
D 12 227 615888 4682.88 539 525 131.4
D 13 249 188365 1429.45 539 525 131.4
D 12 233 98888 748.54 539 525 131.4

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