ASTROSAT CZTI

Data Quality Report

Orbit 20190719_A06_009T02_9000003044_level2

Creation date: 2025-12-02T13:21:25.946575
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/AS1A06_009T02_9000003044cztM0_level2.fits modeM0/AS1A06_009T02_9000003044cztM0_level2_quad_clean.evt
Size (bytes)88,176,96082,290,240
Size84.1 MB 78.5 MB
Events in quadrant A535,116486,088
Events in quadrant B510,704482,991
Events in quadrant C521,176464,916
Events in quadrant D434,102388,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195000
B0208660
C0194930
D0303850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9650320.331606%
B96501031.067358%
C9650750.777202%
D96508578.880829%

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 10205 9650 0 0 0.00% 0.00%
B 10205 9650 0 0 0.00% 0.00%
C 10205 9650 0 0 0.00% 0.00%
D 10205 9646 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 14 188 547 11.27 139 130 37.0
A 0 29 532 10.86 139 130 37.0
A 14 204 495 9.86 139 130 37.0
B 2 9 419 9.98 135 128 29.2
B 14 254 361 7.99 135 128 29.2
B 3 17 359 7.92 135 128 29.2
C 1 81 433 8.18 137 128 37.3
C 1 80 416 7.72 137 128 37.3
C 3 126 378 6.7 137 128 37.3
D 3 14 336 6.47 123 112 34.6
D 3 31 325 6.15 123 112 34.6
D 15 46 314 5.83 123 112 34.6

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