ASTROSAT CZTI

Data Quality Report

Orbit 24565

Creation date: 2024-06-27T19:07:20.469497
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/AS1T03_183T01_9000003610_24565cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24565cztM0_level2_quad_clean.evt
Size (bytes)540,256,320113,299,200
Size515.2 MB 108.1 MB
Events in quadrant A2,922,473790,778
Events in quadrant B2,971,383799,197
Events in quadrant C4,636,349725,135
Events in quadrant D5,427,613699,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124051
B0124941
C0178511
D0203601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5969430.720389%
B5970651.088777%
C59703255.443886%
D59702624.388610%

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 7199 5970 0 0 0.00% 0.00%
B 7200 5971 0 0 0.00% 0.00%
C 7200 5971 29 29 0.40% 0.49%
D 7200 5971 182 182 2.53% 3.05%

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 9680 59.4 756 742 150.5
A 3 137 6521 38.4 756 742 150.5
A 0 226 6468 38.05 756 742 150.5
B 12 111 16465 111.78 755 739 140.7
B 11 111 14514 97.91 755 739 140.7
B 14 111 13025 87.33 755 739 140.7
C 7 247 1570332 9735.06 703 710 161.2
C 0 239 119902 739.25 703 710 161.2
C 14 238 113185 697.59 703 710 161.2
D 8 195 1847416 10901.44 706 687 169.4
D 12 218 537940 3171.46 706 687 169.4
D 1 255 244599 1439.84 706 687 169.4

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