ASTROSAT CZTI

Data Quality Report

Orbit 40237

Creation date: 2024-06-27T22:13:58.690693
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/AS1T05_086T01_9000005534_40237cztM0_level2.fits modeM0/AS1T05_086T01_9000005534_40237cztM0_level2_quad_clean.evt
Size (bytes)1,151,573,760263,099,520
Size1.1 GB 250.9 MB
Events in quadrant A10,144,1591,810,592
Events in quadrant B8,008,6031,895,432
Events in quadrant C11,322,5251,657,847
Events in quadrant D11,921,7471,504,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394675
B0341234
C0433914
D0462324

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159025163.244875%
B159021320.830084%
C1590212057.577663%
D1590212237.690856%

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 21423 15906 359 359 1.68% 2.26%
B 21423 15906 69 69 0.32% 0.43%
C 21423 15906 1000 1000 4.67% 6.29%
D 21422 15904 1121 1121 5.23% 7.05%

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 13 248 1694923 4675.99 1777 1747 362.1
A 10 83 1318398 3636.15 1777 1747 362.1
A 6 10 124465 338.91 1777 1747 362.1
B 5 255 526717 1520.52 1791 1745 345.3
B 0 221 178809 512.84 1791 1745 345.3
B 0 230 73821 208.76 1791 1745 345.3
C 5 250 3762480 9644.62 1679 1695 389.9
C 15 214 651638 1666.79 1679 1695 389.9
C 10 22 79204 198.77 1679 1695 389.9
D 12 227 3968379 9635.37 1674 1631 411.7
D 13 249 491370 1189.59 1674 1631 411.7
D 9 19 300997 727.17 1674 1631 411.7

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