ASTROSAT CZTI

Data Quality Report

Orbit 08399

Creation date: 2024-06-27T15:32:19.665841
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/AS1C02_033T01_9000001178_08399cztM0_level2.evt modeM0/AS1C02_033T01_9000001178_08399cztM0_level2_quad_clean.evt
Size (bytes)534,026,880104,500,800
Size509.3 MB 99.7 MB
Events in quadrant A3,751,694657,224
Events in quadrant B4,179,008672,669
Events in quadrant C3,680,889663,365
Events in quadrant D4,039,833637,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163411
B0173760
C0161880
D0173470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76811622.109100%
B76812032.642885%
C7681570.742091%
D76811391.809660%

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 7681 7681 7 7 0.09% 0.09%
B 7681 7681 3 3 0.04% 0.04%
C 7681 7681 4 4 0.05% 0.05%
D 7681 7681 41 41 0.53% 0.53%

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 5 16 68957 342.51 951 927 198.6
A 14 111 25042 121.41 951 927 198.6
A 0 226 9023 40.76 951 927 198.6
B 0 219 247218 1326.02 958 935 185.7
B 0 214 92811 494.67 958 935 185.7
B 0 230 34567 181.08 958 935 185.7
C 1 16 53951 245.38 920 925 216.1
C 8 128 17981 78.93 920 925 216.1
C 8 112 9082 37.75 920 925 216.1
D 7 71 194005 806.74 920 897 239.4
D 2 14 132491 549.76 920 897 239.4
D 13 122 58272 239.69 920 897 239.4

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