ASTROSAT CZTI

Data Quality Report

Orbit 27023

Creation date: 2024-06-27T19:35:38.801777
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/AS1A09_120T02_9000003904_27023cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27023cztM0_level2_quad_clean.evt
Size (bytes)659,208,96099,731,520
Size628.7 MB 95.1 MB
Events in quadrant A5,790,952635,679
Events in quadrant B5,015,836685,377
Events in quadrant C3,569,428668,780
Events in quadrant D5,160,735588,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215490
B0190290
C0146500
D0196680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A632175411.928492%
B63214517.134947%
C63211292.040816%
D63215969.428888%

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 7571 6321 529 529 6.99% 8.37%
B 7571 6321 177 177 2.34% 2.80%
C 7571 6321 0 0 0.00% 0.00%
D 7571 6321 540 540 7.13% 8.54%

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 14 235 2282966 13408.25 856 844 170.2
A 6 16 179973 1052.44 856 844 170.2
A 8 192 27068 154.07 856 844 170.2
B 0 189 1542083 9295.74 883 866 165.8
B 0 219 24246 141.01 883 866 165.8
B 12 111 18948 109.06 883 866 165.8
C 14 238 142737 691.59 878 888 205.1
C 15 208 8736 38.26 878 888 205.1
C 13 61 5973 24.79 878 888 205.1
D 11 176 1572012 7896.12 836 819 199.0
D 1 52 242519 1214.68 836 819 199.0
D 2 250 144504 722.1 836 819 199.0

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