ASTROSAT CZTI

Data Quality Report

Orbit 48608

Creation date: 2024-09-23T11:14:27.192368
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_9000006436_48608cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48608cztM0_level2_quad_clean.evt
Size (bytes)484,626,240103,147,200
Size462.2 MB 98.4 MB
Events in quadrant A7,454,683660,521
Events in quadrant B4,012,985698,450
Events in quadrant C2,708,192688,596
Events in quadrant D3,255,868619,069

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267612
B0165702
C0132522
D0147792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65404066.207951%
B65403715.672783%
C654070.107034%
D6540640.978593%

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 7620 6542 248 248 3.25% 3.79%
B 7620 6542 210 210 2.76% 3.21%
C 7620 6542 1 1 0.01% 0.02%
D 7620 6542 54 54 0.71% 0.83%

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 10 83 4035592 28204.28 686 672 143.1
A 13 248 753270 5260.69 686 672 143.1
A 13 254 11704 77.11 686 672 143.1
B 12 16 1195346 8785.74 688 665 136.0
B 0 183 63222 460.05 688 665 136.0
B 12 111 17585 124.43 688 665 136.0
C 14 254 9716 55.55 690 694 162.4
C 12 250 7138 39.68 690 694 162.4
C 13 61 4740 24.91 690 694 162.4
D 2 165 497512 2931.41 677 655 169.5
D 10 199 121178 711.07 677 655 169.5
D 2 234 32515 187.97 677 655 169.5

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