ASTROSAT CZTI

Data Quality Report

Orbit 40676

Creation date: 2024-06-27T22:19:01.324119
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_029T02_9000005558_40676cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40676cztM0_level2_quad_clean.evt
Size (bytes)367,421,76088,951,680
Size350.4 MB 84.8 MB
Events in quadrant A4,048,568582,270
Events in quadrant B2,865,422631,014
Events in quadrant C3,812,690596,877
Events in quadrant D2,469,606519,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154133
B0118952
C0147172
D0110102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51953576.871992%
B5195721.385948%
C51951232.367661%
D51953236.217517%

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 7108 5196 303 303 4.26% 5.83%
B 7108 5196 33 33 0.46% 0.64%
C 7108 5196 127 127 1.79% 2.44%
D 7108 5196 14 14 0.20% 0.27%

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 974763 8474.62 565 557 115.0
A 10 83 469264 4077.29 565 557 115.0
A 6 10 410924 3569.79 565 557 115.0
B 0 229 339626 3073.77 579 566 110.3
B 5 255 72935 656.07 579 566 110.3
B 0 230 69708 626.81 579 566 110.3
C 9 187 1199558 9120.98 565 571 131.5
C 15 214 224731 1705.24 565 571 131.5
C 14 254 111137 841.1 565 571 131.5
D 2 250 141594 1062.51 540 525 132.8
D 12 191 136068 1020.89 540 525 132.8
D 5 51 32678 242.17 540 525 132.8

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