ASTROSAT CZTI

Data Quality Report

Orbit 49794

Creation date: 2024-12-12T07:50:08.090534
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/AS1A13_037T01_9000006440_49794cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49794cztM0_level2_quad_clean.evt
Size (bytes)1,009,854,72057,222,720
Size963.1 MB 54.6 MB
Events in quadrant A8,582,014481,367
Events in quadrant B3,507,610684,324
Events in quadrant C8,910,93369,162
Events in quadrant D15,872,98941,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300551
B0150161
C0311091
D0516238

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6543167625.615161%
B65431121.711753%
C6543597391.288400%
D6543618694.543787%

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 7632 6542 1425 1425 18.67% 21.78%
B 7633 6544 42 42 0.55% 0.64%
C 7632 6542 1005 1005 13.17% 15.36%
D 7632 6542 5814 5814 76.18% 88.87%

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 17 1655429 10308.56 625 611 160.5
A 5 16 1395229 8687.66 625 611 160.5
A 15 63 693554 4316.63 625 611 160.5
B 5 185 223709 1481.84 710 687 150.5
B 4 206 106728 704.58 710 687 150.5
B 10 28 95005 626.69 710 687 150.5
C 15 148 2756865 58707.06 154 153 47.0
C 15 147 1605421 34185.86 154 153 47.0
C 15 213 575195 12246.12 154 153 47.0
D 8 129 2743155 33088.54 250 239 82.9
D 7 61 2681057 32339.44 250 239 82.9
D 15 168 2030087 24486.61 250 239 82.9

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