ASTROSAT CZTI

Data Quality Report

Orbit 47669

Creation date: 2024-07-22T03:07:43.452042
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/AS1A13_082T01_9000006342_47669cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47669cztM0_level2_quad_clean.evt
Size (bytes)566,994,240118,175,040
Size540.7 MB 112.7 MB
Events in quadrant A7,966,834774,670
Events in quadrant B3,778,107817,666
Events in quadrant C3,313,702785,075
Events in quadrant D5,346,617677,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288390
B0162340
C0154480
D0214600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75213985.291849%
B7521851.130169%
C752250.066472%
D75225667.524595%

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 7521 7521 40 40 0.53% 0.53%
B 7521 7521 9 9 0.12% 0.12%
C 7522 7522 1 1 0.01% 0.01%
D 7522 7522 451 451 6.00% 6.00%

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 4138732 23192.14 847 827 178.4
A 9 191 436982 2444.56 847 827 178.4
A 13 248 98673 548.41 847 827 178.4
B 0 200 116377 688.43 850 824 167.9
B 0 190 110528 653.58 850 824 167.9
B 5 172 87046 513.68 850 824 167.9
C 14 254 51547 256.73 836 838 197.5
C 13 61 5588 24.05 836 838 197.5
C 3 233 4530 18.69 836 838 197.5
D 12 2 1893237 9013.5 821 795 210.0
D 12 218 80244 378.41 821 795 210.0
D 5 171 57172 268.52 821 795 210.0

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