ASTROSAT CZTI

Data Quality Report

Orbit 20230830_T05_138T01_9000005828_level2

Creation date: 2023-09-03T22:22:40.962533
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_138T01_9000005828cztM0_level2.fits modeM0/AS1T05_138T01_9000005828cztM0_level2_quad_clean.evt
Size (bytes)1,857,168,0002,120,722,560
Size1.7 GB 2.0 GB
Events in quadrant A11,087,75012,748,156
Events in quadrant B10,545,27812,591,061
Events in quadrant C10,950,03613,287,645
Events in quadrant D9,025,78410,980,382

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04939840
B04918700
C04975540
D06520420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07920
B07940
C07940
D07940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043660
B043660
C043660
D043660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21346721851.023577%
B21348068413.204516%
C21347333131.551953%
D213463184808.657238%

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 296121 213427 0 0 0.00% 0.00%
B 296121 213378 0 0 0.00% 0.00%
C 296121 213429 0 0 0.00% 0.00%
D 296121 212666 0 0 0.00% 0.00%

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 7 110 9321 9.17 2892 2702 721.5
A 0 29 9316 9.17 2892 2702 721.5
A 9 19 9161 8.95 2892 2702 721.5
B 2 9 9064 11.9 2791 2657 538.4
B 3 80 7698 9.36 2791 2657 538.4
B 2 8 7305 8.63 2791 2657 538.4
C 1 81 9199 8.81 2895 2707 737.1
C 1 80 8788 8.25 2895 2707 737.1
C 3 202 8753 8.2 2895 2707 737.1
D 10 189 6912 6.59 2590 2353 691.6
D 11 66 6711 6.3 2590 2353 691.6
D 7 3 6709 6.3 2590 2353 691.6

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