ASTROSAT CZTI

Data Quality Report

Orbit 36670

Creation date: 2024-06-27T21:30:02.201760
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_049T05_9000005232_36670cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36670cztM0_level2_quad_clean.evt
Size (bytes)455,287,68085,536,000
Size434.2 MB 81.6 MB
Events in quadrant A2,799,222572,512
Events in quadrant B3,202,925567,661
Events in quadrant C3,066,240551,960
Events in quadrant D4,339,383506,038

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117803
B0129192
C0124472
D0166762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560290.160657%
B5602631.124598%
C56021392.481257%
D56025169.210996%

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 7214 5603 2 2 0.03% 0.04%
B 7214 5603 46 46 0.64% 0.82%
C 7214 5603 94 94 1.30% 1.68%
D 7214 5603 433 433 6.00% 7.73%

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 216308 1617.62 661 649 133.3
A 9 143 11317 80.02 661 649 133.3
A 13 254 9265 64.63 661 649 133.3
B 5 255 297227 2385.58 648 631 124.3
B 0 189 137290 1099.17 648 631 124.3
B 0 199 112400 898.98 648 631 124.3
C 0 10 363149 2486.26 625 630 145.8
C 15 214 251152 1718.15 625 630 145.8
C 14 254 7090 44.3 625 630 145.8
D 2 249 907547 6082.71 609 592 149.1
D 13 249 245790 1644.48 609 592 149.1
D 7 55 218743 1463.08 609 592 149.1

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