ASTROSAT CZTI

Data Quality Report

Orbit 20409

Creation date: 2024-06-27T18:15:03.330385
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/AS1A05_140T01_9000003016_20409cztM0_level2.evt modeM0/AS1A05_140T01_9000003016_20409cztM0_level2_quad_clean.evt
Size (bytes)451,307,52068,832,000
Size430.4 MB 65.6 MB
Events in quadrant A3,302,814421,891
Events in quadrant B3,402,466431,334
Events in quadrant C3,341,702405,669
Events in quadrant D3,205,492397,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132632
B0135962
C0133472
D0131452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6120220.359477%
B6120460.751634%
C6120610.996732%
D612050.081699%

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 7555 6121 0 0 0.00% 0.00%
B 7555 6121 3 3 0.04% 0.05%
C 7555 6121 0 0 0.00% 0.00%
D 7555 6121 2 2 0.03% 0.03%

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 7859 41.79 855 843 167.9
A 0 226 7498 39.64 855 843 167.9
A 3 137 6467 33.5 855 843 167.9
B 0 189 30116 186.35 856 840 157.1
B 0 230 22511 137.94 856 840 157.1
B 12 111 18247 110.8 856 840 157.1
C 14 238 132464 704.07 819 829 187.0
C 7 220 8737 42.3 819 829 187.0
C 9 221 6944 32.71 819 829 187.0
D 1 52 61100 311.42 821 802 193.6
D 13 153 42938 217.62 821 802 193.6
D 2 234 23166 115.5 821 802 193.6

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