ASTROSAT CZTI

Data Quality Report

Orbit 01131

Creation date: 2024-06-27T14:07:59.394740
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_997T01_9000000214_01131cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01131cztM0_level2_quad_clean.evt
Size (bytes)987,877,44096,094,080
Size942.1 MB 91.6 MB
Events in quadrant A7,440,222632,009
Events in quadrant B7,769,347626,535
Events in quadrant C7,602,872606,265
Events in quadrant D6,684,156602,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266162
B0275811
C0270501
D0243981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347110.173310%
B6347210.330865%
C6347190.299354%
D634750.078777%

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 7167 6348 208 208 2.90% 3.28%
B 7167 6348 197 197 2.75% 3.10%
C 7167 6348 184 184 2.57% 2.90%
D 7167 6348 114 114 1.59% 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 12 243 7933 12.86 1938 1946 465.7
A 11 79 6339 9.43 1938 1946 465.7
A 3 111 6090 8.9 1938 1946 465.7
B 15 22 112597 237.14 1977 1986 466.4
B 8 234 35084 70.96 1977 1986 466.4
B 5 249 29063 58.05 1977 1986 466.4
C 15 241 349632 694.91 1801 1866 500.5
C 9 54 98590 193.27 1801 1866 500.5
C 0 236 42326 80.85 1801 1866 500.5
D 10 125 30422 52.36 1769 1834 545.9
D 2 16 19438 32.24 1769 1834 545.9
D 12 22 11872 18.39 1769 1834 545.9

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