ASTROSAT CZTI

Data Quality Report

Orbit 00692

Creation date: 2024-06-27T14:01:37.906722
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/AS1P01_147T02_9000000098_00692cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00692cztM0_level2_quad_clean.evt
Size (bytes)1,030,959,36072,970,560
Size983.2 MB 69.6 MB
Events in quadrant A7,006,923450,844
Events in quadrant B7,629,122455,266
Events in quadrant C9,294,936435,715
Events in quadrant D6,878,106431,999

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252481
B0271221
C0319741
D0249102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6238100.160308%
B6238100.160308%
C6238270.432831%
D6237140.224467%

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 7373 6239 120 120 1.63% 1.92%
B 7373 6239 144 144 1.95% 2.31%
C 7373 6239 366 366 4.96% 5.87%
D 7372 6238 112 112 1.52% 1.80%

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 12 133 27989 60.16 1816 1830 434.8
A 11 79 6956 11.79 1816 1830 434.8
A 3 111 5978 9.54 1816 1830 434.8
B 5 247 149771 329.07 1919 1930 449.3
B 7 221 62336 134.45 1919 1930 449.3
B 0 220 58856 126.71 1919 1930 449.3
C 3 127 1051957 2124.82 1779 1850 494.2
C 3 31 267720 537.97 1779 1850 494.2
C 3 15 238346 478.53 1779 1850 494.2
D 0 25 310912 589.24 1707 1769 524.6
D 1 4 111405 208.97 1707 1769 524.6
D 13 37 22238 39.01 1707 1769 524.6

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