ASTROSAT CZTI

Data Quality Report

Orbit 01230

Creation date: 2024-06-27T14:09:29.344260
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/AS1G04_003T02_9000000224_01230cztM0_level2.evt modeM0/AS1G04_003T02_9000000224_01230cztM0_level2_quad_clean.evt
Size (bytes)963,967,68099,158,400
Size919.3 MB 94.6 MB
Events in quadrant A7,140,504658,121
Events in quadrant B7,485,304665,222
Events in quadrant C7,044,272638,074
Events in quadrant D7,112,587609,631

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256052
B0266361
C0252791
D0256161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A618780.129303%
B6187140.226281%
C618770.113140%
D61871752.828511%

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 7487 6188 155 155 2.07% 2.50%
B 7487 6188 208 208 2.78% 3.36%
C 7487 6188 142 142 1.90% 2.29%
D 7487 6188 465 465 6.21% 7.51%

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 12 243 10138 18.75 1854 1866 441.1
A 12 133 7417 12.58 1854 1866 441.1
A 11 79 7276 12.26 1854 1866 441.1
B 5 191 37011 77.74 1939 1948 451.0
B 15 22 22312 45.15 1939 1948 451.0
B 7 221 19173 38.19 1939 1948 451.0
C 15 241 325383 689.29 1707 1761 469.5
C 3 111 18379 35.4 1707 1761 469.5
C 9 52 18011 34.61 1707 1761 469.5
D 12 22 1000627 2002.74 1619 1677 498.8
D 6 6 39436 75.7 1619 1677 498.8
D 10 215 10631 17.95 1619 1677 498.8

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