ASTROSAT CZTI

Data Quality Report

Orbit 20171011_G08_046T09_9000001600_level2

Creation date: 2025-11-17T16:24:40.900857
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/AS1G08_046T09_9000001600cztM0_level2.fits modeM0/AS1G08_046T09_9000001600cztM0_level2_quad_clean.evt
Size (bytes)648,512,640673,021,440
Size618.5 MB 641.8 MB
Events in quadrant A3,719,4163,731,402
Events in quadrant B3,768,9104,081,813
Events in quadrant C3,942,4444,059,002
Events in quadrant D3,354,6243,662,046

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02314980
B01916970
C01458840
D01926580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014400
B014420
C014400
D014360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70599863112.225386%
B7069046336.553968%
C707804520.638598%
D7072427773.926531%

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 81542 70251 0 0 0.00% 0.00%
B 81542 70782 0 0 0.00% 0.00%
C 81542 70879 0 0 0.00% 0.00%
D 81542 70758 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 3812 11.99 967 907 242.3
A 0 29 3392 10.26 967 907 242.3
A 14 204 3192 9.43 967 907 242.3
B 2 9 3271 11.71 994 947 198.5
B 3 17 2505 7.85 994 947 198.5
B 14 254 2474 7.69 994 947 198.5
C 1 80 3072 7.84 1039 967 268.4
C 1 81 3021 7.65 1039 967 268.4
C 12 241 2789 6.79 1039 967 268.4
D 6 231 2504 6.39 956 867 256.2
D 3 14 2481 6.3 956 867 256.2
D 7 3 2377 5.89 956 867 256.2

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