ASTROSAT CZTI

Data Quality Report

Orbit 37201

Creation date: 2024-06-27T21:36:49.953590
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/AS1A11_079T01_9000005284_37201cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37201cztM0_level2_quad_clean.evt
Size (bytes)461,496,96063,247,680
Size440.1 MB 60.3 MB
Events in quadrant A2,874,612401,544
Events in quadrant B2,933,476401,773
Events in quadrant C3,782,416387,001
Events in quadrant D4,037,242363,966

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114823
B0116872
C0146882
D0153872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5149120.233055%
B5149450.873956%
C5149370.718586%
D51491112.155758%

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 7151 5150 0 0 0.00% 0.00%
B 7151 5150 21 21 0.29% 0.41%
C 7151 5150 23 23 0.32% 0.45%
D 7151 5150 97 97 1.36% 1.88%

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 10 83 251869 1874.84 673 663 134.0
A 9 143 7455 50.69 673 663 134.0
A 13 254 7139 48.33 673 663 134.0
B 5 172 214262 1698.45 665 649 125.8
B 0 213 57048 448.43 665 649 125.8
B 0 155 34078 265.8 665 649 125.8
C 10 49 875865 5917.22 640 646 147.9
C 15 214 224764 1515.23 640 646 147.9
C 0 10 79434 532.67 640 646 147.9
D 1 52 495976 3227.03 640 624 153.5
D 12 235 400286 2603.65 640 624 153.5
D 2 249 193150 1254.23 640 624 153.5

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