ASTROSAT CZTI

Data Quality Report

Orbit 08227

Creation date: 2024-06-27T15:29:42.187781
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_041T01_9000001136_08227cztM0_level2.evt modeM0/AS1C02_041T01_9000001136_08227cztM0_level2_quad_clean.evt
Size (bytes)503,562,24098,464,320
Size480.2 MB 93.9 MB
Events in quadrant A3,361,975626,259
Events in quadrant B3,943,971626,027
Events in quadrant C3,715,827612,989
Events in quadrant D3,722,641598,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153153
B0166972
C0156952
D0165362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7445230.308932%
B74451401.880457%
C7445110.147750%
D7445801.074547%

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 7875 7446 2 2 0.03% 0.03%
B 7875 7446 81 81 1.03% 1.09%
C 7875 7446 0 0 0.00% 0.00%
D 7875 7446 53 53 0.67% 0.71%

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 32668 180.07 861 842 176.7
A 0 226 8140 41.29 861 842 176.7
A 12 194 7749 39.08 861 842 176.7
B 10 16 240054 1445.2 859 839 165.5
B 4 48 138252 830.17 859 839 165.5
B 0 214 74510 445.08 859 839 165.5
C 9 68 431303 2212.06 830 830 194.6
C 1 16 41259 207.75 830 830 194.6
C 13 61 6286 28.04 830 830 194.6
D 1 52 209464 1016.55 831 805 205.3
D 12 233 139485 675.62 831 805 205.3
D 7 55 63958 307.67 831 805 205.3

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