ASTROSAT CZTI

Data Quality Report

Orbit 24422

Creation date: 2024-06-27T19:05:52.903323
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_054T01_9000003604_24422cztM0_level2.evt modeM0/AS1A07_054T01_9000003604_24422cztM0_level2_quad_clean.evt
Size (bytes)495,345,600138,072,960
Size472.4 MB 131.7 MB
Events in quadrant A3,348,056928,538
Events in quadrant B3,396,577948,597
Events in quadrant C3,381,104918,006
Events in quadrant D4,379,615878,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150033
B0150552
C0149812
D0181752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7302680.931252%
B73021301.780334%
C73021071.465352%
D73022373.245686%

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 7847 7304 0 0 0.00% 0.00%
B 7847 7304 11 11 0.14% 0.15%
C 7847 7304 0 0 0.00% 0.00%
D 7847 7304 138 138 1.76% 1.89%

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 15 174 63668 368.49 852 833 170.5
A 13 254 11775 64.17 852 833 170.5
A 3 137 7699 40.26 852 833 170.5
B 3 64 37237 224.45 855 832 162.2
B 12 111 19710 116.39 855 832 162.2
B 11 111 17624 103.53 855 832 162.2
C 14 238 132682 682.79 828 834 193.1
C 3 233 15674 76.85 828 834 193.1
C 2 16 6167 27.62 828 834 193.1
D 7 238 589674 2948.27 820 793 199.7
D 12 218 425107 2124.36 820 793 199.7
D 1 52 132030 657.05 820 793 199.7

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