ASTROSAT CZTI

Data Quality Report

Orbit 00737

Creation date: 2024-06-27T14:02:15.724247
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_00737cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00737cztM0_level2_quad_clean.evt
Size (bytes)1,186,922,88083,096,640
Size1.1 GB 79.2 MB
Events in quadrant A6,984,770559,030
Events in quadrant B11,979,117494,938
Events in quadrant C6,689,554550,094
Events in quadrant D9,896,111492,087

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250220
B0400690
C0241270
D0337560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5994160.266934%
B5993173128.883698%
C599330.050058%
D599388414.750542%

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 7249 5995 183 183 2.52% 3.05%
B 7248 5994 2489 2489 34.34% 41.52%
C 7248 5994 102 102 1.41% 1.70%
D 7248 5994 1854 1854 25.58% 30.93%

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 15 171 147572 342.78 1770 1782 425.3
A 12 133 33855 75.41 1770 1782 425.3
A 15 17 7295 12.96 1770 1782 425.3
B 8 38 5228591 13177.33 1706 1714 396.7
B 7 221 119634 297.28 1706 1714 396.7
B 5 191 54755 133.72 1706 1714 396.7
C 15 241 37024 75.65 1682 1744 466.4
C 8 208 29841 60.24 1682 1744 466.4
C 3 111 23140 45.88 1682 1744 466.4
D 13 25 3001874 6397.16 1550 1601 469.0
D 12 188 522267 1110.16 1550 1601 469.0
D 7 207 168860 356.63 1550 1601 469.0

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