ASTROSAT CZTI

Data Quality Report

Orbit 15646

Creation date: 2024-06-27T17:11:34.348615
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/AS1T02_086T01_9000002316_15646cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15646cztM0_level2_quad_clean.evt
Size (bytes)483,773,76072,907,200
Size461.4 MB 69.5 MB
Events in quadrant A3,794,080440,729
Events in quadrant B3,344,564452,771
Events in quadrant C3,462,979447,098
Events in quadrant D3,625,998431,154

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152083
B0135542
C0140852
D0145732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62451041.665332%
B62451021.633307%
C62451512.417934%
D62451782.850280%

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 7576 6246 5 5 0.07% 0.08%
B 7576 6246 0 0 0.00% 0.00%
C 7576 6246 19 19 0.25% 0.30%
D 7576 6246 80 80 1.06% 1.28%

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 15 249 547774 3282.5 836 820 166.6
A 15 157 29183 170.22 836 820 166.6
A 0 226 7397 39.47 836 820 166.6
B 0 219 30920 192.8 841 823 156.1
B 12 111 17185 104.81 841 823 156.1
B 0 214 14678 88.75 841 823 156.1
C 14 238 129870 697.66 820 827 185.0
C 14 225 111221 596.83 820 827 185.0
C 3 233 20880 108.41 820 827 185.0
D 1 52 343289 1733.91 821 799 197.5
D 10 70 105540 530.27 821 799 197.5
D 2 120 51817 258.29 821 799 197.5

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