ASTROSAT CZTI

Data Quality Report

Orbit 29523

Creation date: 2024-06-27T20:05:01.257056
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/AS1A10_073T07_9000004254_29523cztM0_level2.evt modeM0/AS1A10_073T07_9000004254_29523cztM0_level2_quad_clean.evt
Size (bytes)2,037,401,280225,777,600
Size1.9 GB 215.3 MB
Events in quadrant A8,853,6251,427,148
Events in quadrant B9,113,7421,455,873
Events in quadrant C9,247,1751,417,235
Events in quadrant D33,244,5071,260,611

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382124
B0387394
C0387065
D01116064

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185232381.284889%
B185232921.576419%
C185224882.634705%
D18522569330.736422%

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 20454 18527 0 0 0.00% 0.00%
B 20454 18527 18 18 0.09% 0.10%
C 20453 18525 3 3 0.01% 0.02%
D 20453 18526 6180 6180 30.22% 33.36%

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 0 13 47364 97.21 2279 2227 464.3
A 13 254 36619 74.07 2279 2227 464.3
A 3 137 22814 44.34 2279 2227 464.3
B 0 190 85909 190.65 2263 2205 439.0
B 12 111 54724 119.62 2263 2205 439.0
B 11 111 49673 108.12 2263 2205 439.0
C 14 238 398183 766.08 2192 2211 516.9
C 3 233 129036 245.37 2192 2211 516.9
C 14 254 78371 147.35 2192 2211 516.9
D 8 195 23633012 47248.9 2087 2033 500.1
D 7 223 606269 1208.14 2087 2033 500.1
D 13 153 417483 830.67 2087 2033 500.1

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