ASTROSAT CZTI

Data Quality Report

Orbit 43894

Creation date: 2024-06-27T22:56:55.320603
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_009T02_9000005914_43894cztM0_level2.fits modeM0/AS1A13_009T02_9000005914_43894cztM0_level2_quad_clean.evt
Size (bytes)459,852,480111,075,840
Size438.5 MB 105.9 MB
Events in quadrant A5,593,835717,534
Events in quadrant B3,591,421787,594
Events in quadrant C3,131,096747,120
Events in quadrant D4,203,588660,676

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216091
B0148741
C0138001
D0169711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64625127.923244%
B64631302.011450%
C6463550.850998%
D64632774.285935%

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 7652 6463 429 429 5.61% 6.64%
B 7653 6464 61 61 0.80% 0.94%
C 7653 6464 21 21 0.27% 0.32%
D 7653 6464 230 230 3.01% 3.56%

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 1054517 6844.34 745 731 154.0
A 15 223 1022575 6636.87 745 731 154.0
A 15 222 411458 2667.67 745 731 154.0
B 7 205 394332 2684.41 752 730 146.6
B 5 172 114822 778.12 752 730 146.6
B 0 200 67542 455.67 752 730 146.6
C 14 254 113236 654.79 734 739 171.8
C 3 233 59926 344.5 734 739 171.8
C 15 158 43096 246.54 734 739 171.8
D 5 235 602912 3317.57 723 700 181.5
D 1 52 325641 1790.09 723 700 181.5
D 13 171 111492 610.35 723 700 181.5

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