ASTROSAT CZTI

Data Quality Report

Orbit 42027

Creation date: 2024-06-27T22:35:54.561771
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_006T12_9000005734_42027cztM0_level2.fits modeM0/AS1A12_006T12_9000005734_42027cztM0_level2_quad_clean.evt
Size (bytes)341,864,64087,027,840
Size326.0 MB 83.0 MB
Events in quadrant A3,858,611580,165
Events in quadrant B2,564,922613,384
Events in quadrant C2,475,439572,772
Events in quadrant D3,357,585510,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147652
B0107933
C0103512
D0130852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51122174.244914%
B5111300.586969%
C511150.097828%
D51111813.541381%

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 7205 5113 166 166 2.30% 3.25%
B 7204 5112 10 10 0.14% 0.20%
C 7204 5112 2 2 0.03% 0.04%
D 7204 5112 139 139 1.93% 2.72%

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 15 223 1057418 8922.38 577 566 118.4
A 10 83 518577 4373.26 577 566 118.4
A 2 79 32507 269.66 577 566 118.4
B 7 202 85592 764.01 581 568 111.3
B 5 255 82319 734.6 581 568 111.3
B 0 186 36357 321.59 581 568 111.3
C 15 214 217686 1628.51 570 574 133.3
C 15 111 31856 234.64 570 574 133.3
C 13 61 3825 24.39 570 574 133.3
D 2 249 404107 2939.84 560 543 137.3
D 1 52 361501 2629.47 560 543 137.3
D 13 249 227382 1652.45 560 543 137.3

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