ASTROSAT CZTI

Data Quality Report

Orbit 43415

Creation date: 2024-06-27T22:51:42.892810
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_9000005874_43415cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43415cztM0_level2_quad_clean.evt
Size (bytes)326,586,24085,956,480
Size311.5 MB 82.0 MB
Events in quadrant A2,917,633574,346
Events in quadrant B2,473,184603,573
Events in quadrant C2,404,341576,808
Events in quadrant D3,908,919501,155

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117772
B0105353
C0102942
D0151362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4944771.557443%
B4943150.303459%
C494350.101153%
D49432895.846652%

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 6946 4945 66 66 0.95% 1.33%
B 6945 4944 12 12 0.17% 0.24%
C 6945 4944 2 2 0.03% 0.04%
D 6945 4944 296 296 4.26% 5.99%

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 554465 5059.76 537 527 109.5
A 15 237 260579 2375.36 537 527 109.5
A 13 6 17149 151.83 537 527 109.5
B 0 189 242326 2319.54 548 534 104.2
B 0 245 28894 272.06 548 534 104.2
B 5 255 23237 217.79 548 534 104.2
C 15 214 206394 1642.0 539 545 125.4
C 3 233 81208 643.43 539 545 125.4
C 15 159 12586 96.05 539 545 125.4
D 1 52 1042702 8210.84 520 505 126.9
D 2 16 264244 2077.84 520 505 126.9
D 5 222 227615 1789.26 520 505 126.9

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