ASTROSAT CZTI

Data Quality Report

Orbit 00751

Creation date: 2024-06-27T14:02:27.620431
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_010T01_9000000108_00751cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00751cztM0_level2_quad_clean.evt
Size (bytes)1,061,850,24084,104,640
Size1012.7 MB 80.2 MB
Events in quadrant A6,880,570571,832
Events in quadrant B7,156,570579,345
Events in quadrant C6,606,306555,965
Events in quadrant D11,122,807426,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246300
B0254400
C0238390
D0376120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5913280.473533%
B591350.084559%
C591320.033824%
D5913215036.360561%

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 7148 5914 149 149 2.08% 2.52%
B 7148 5914 175 175 2.45% 2.96%
C 7148 5914 94 94 1.32% 1.59%
D 7148 5914 2397 2397 33.53% 40.53%

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 15 233 139313 326.67 1749 1761 421.1
A 13 17 11405 22.9 1749 1761 421.1
A 12 189 10841 21.56 1749 1761 421.1
B 7 221 27428 59.58 1848 1856 429.2
B 8 234 22696 48.55 1848 1856 429.2
B 0 190 15402 31.56 1848 1856 429.2
C 10 207 49115 103.36 1656 1711 458.6
C 15 241 35887 74.52 1656 1711 458.6
C 3 111 25462 51.79 1656 1711 458.6
D 13 25 5578866 13277.02 1368 1424 420.1
D 6 226 197333 466.36 1368 1424 420.1
D 1 4 65774 153.18 1368 1424 420.1

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