ASTROSAT CZTI

Data Quality Report

Orbit 34858

Creation date: 2022-03-10T09:30:38.078411
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/AS1C07_005T01_9000004992_34858cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34858cztM0_level2_quad_clean.evt
Size (bytes)919,356,48073,373,760
Size876.8 MB 70.0 MB
Events in quadrant A8,574,034496,769
Events in quadrant B12,433,767237,577
Events in quadrant C3,047,723593,540
Events in quadrant D3,455,884545,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288923
B0402652
C0118672
D0132822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4926201740.946001%
B4926488399.127081%
C49261262.557856%
D49262234.527000%

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 7049 4926 1722 1722 24.43% 34.96%
B 7048 4925 4774 4774 67.74% 96.93%
C 7049 4927 101 101 1.43% 2.05%
D 7049 4927 182 182 2.58% 3.69%

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 15 169 6466121 62260.05 523 514 103.8
A 10 83 39827 378.56 523 514 103.8
A 15 237 32924 312.09 523 514 103.8
B 5 31 3852110 74033.28 275 269 52.0
B 5 15 3835203 73708.33 275 269 52.0
B 5 14 3154460 60624.29 275 269 52.0
C 0 10 271730 2037.54 589 595 133.1
C 15 214 223751 1676.98 589 595 133.1
C 0 207 193472 1449.44 589 595 133.1
D 8 195 423691 3020.19 579 562 140.1
D 12 128 227664 1621.0 579 562 140.1
D 13 249 223030 1587.92 579 562 140.1

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