ASTROSAT CZTI

Data Quality Report

Orbit 40391

Creation date: 2024-06-27T22:15:34.300728
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_056T02_9000005538_40391cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40391cztM0_level2_quad_clean.evt
Size (bytes)304,303,68087,868,800
Size290.2 MB 83.8 MB
Events in quadrant A3,075,853606,427
Events in quadrant B2,547,377619,042
Events in quadrant C2,503,484586,316
Events in quadrant D2,736,323488,999

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124043
B0110722
C0105952
D0116842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5138480.934216%
B5138250.486571%
C5138150.291942%
D513855410.782406%

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 6990 5139 42 42 0.60% 0.82%
B 6990 5139 10 10 0.14% 0.19%
C 6990 5139 8 8 0.11% 0.16%
D 6990 5139 68 68 0.97% 1.32%

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 466773 4017.51 566 556 116.0
A 2 79 226525 1947.23 566 556 116.0
A 13 248 118004 1012.08 566 556 116.0
B 4 170 280576 2593.05 566 554 108.0
B 0 245 15950 142.57 566 554 108.0
B 0 230 14944 133.25 566 554 108.0
C 15 214 225190 1726.63 554 559 130.1
C 0 10 49755 378.15 554 559 130.1
C 12 249 46882 356.06 554 559 130.1
D 12 128 245078 1915.6 518 504 127.7
D 12 191 162661 1270.08 518 504 127.7
D 13 171 136221 1062.99 518 504 127.7

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