ASTROSAT CZTI

Data Quality Report

Orbit 39730

Creation date: 2024-06-27T22:08:18.581048
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/AS1A12_022T01_9000005494_39730cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39730cztM0_level2_quad_clean.evt
Size (bytes)1,328,751,360248,999,040
Size1.2 GB 237.5 MB
Events in quadrant A13,497,4071,484,337
Events in quadrant B9,240,3471,789,643
Events in quadrant C10,712,1061,706,387
Events in quadrant D14,487,5071,443,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0504225
B0385884
C0429294
D0548314

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16153249615.452238%
B161533692.284405%
C161533191.974865%
D16153174410.796756%

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 21583 16157 1905 1905 8.83% 11.79%
B 21583 16157 167 167 0.77% 1.03%
C 21583 16157 271 271 1.26% 1.68%
D 21583 16157 1564 1564 7.25% 9.68%

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 5294558 15929.02 1649 1619 332.3
A 10 83 1114017 3347.74 1649 1619 332.3
A 13 248 568115 1704.86 1649 1619 332.3
B 5 172 1600247 4665.18 1759 1708 342.7
B 5 255 524793 1526.57 1759 1708 342.7
B 0 190 88374 252.93 1759 1708 342.7
C 9 187 1830352 4576.09 1725 1735 399.6
C 15 208 1368530 3420.38 1725 1735 399.6
C 15 214 659340 1645.65 1725 1735 399.6
D 12 227 7125697 17510.89 1663 1615 406.8
D 12 233 257431 628.79 1663 1615 406.8
D 2 250 229601 560.39 1663 1615 406.8

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