ASTROSAT CZTI

Data Quality Report

Orbit 25995

Creation date: 2024-06-27T19:23:38.624577
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/AS1A07_068T01_9000003760_25995cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25995cztM0_level2_quad_clean.evt
Size (bytes)452,589,120106,217,280
Size431.6 MB 101.3 MB
Events in quadrant A3,278,253715,291
Events in quadrant B3,423,207712,711
Events in quadrant C3,289,843681,835
Events in quadrant D3,308,274688,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135970
B0140420
C0137380
D0137010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6000711.183333%
B60001121.866667%
C60001332.216667%
D5999611.016836%

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 7250 6000 0 0 0.00% 0.00%
B 7250 6000 19 19 0.26% 0.32%
C 7250 6000 0 0 0.00% 0.00%
D 7249 5999 3 3 0.04% 0.05%

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 13 254 8997 48.72 851 838 167.5
A 0 226 7401 39.19 851 838 167.5
A 3 137 7128 37.56 851 838 167.5
B 10 245 181018 1150.31 828 810 156.7
B 12 111 18192 110.95 828 810 156.7
B 11 111 16284 98.77 828 810 156.7
C 14 238 132305 709.75 806 812 185.3
C 3 233 14848 75.76 806 812 185.3
C 13 61 5464 25.11 806 812 185.3
D 1 52 114768 586.75 826 810 194.2
D 7 80 61220 311.04 826 810 194.2
D 2 234 20743 102.63 826 810 194.2

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