ASTROSAT CZTI

Data Quality Report

Orbit 44792

Creation date: 2024-06-27T23:06:36.879326
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_004T13_9000006022_44792cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44792cztM0_level2_quad_clean.evt
Size (bytes)590,342,400106,729,920
Size563.0 MB 101.8 MB
Events in quadrant A6,661,707688,413
Events in quadrant B5,094,952738,830
Events in quadrant C3,130,999750,719
Events in quadrant D6,468,400606,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247342
B0195542
C0136862
D0237452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A640670811.052139%
B64065378.382766%
C6406671.045894%
D640691114.221043%

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 7606 6406 551 551 7.24% 8.60%
B 7606 6406 400 400 5.26% 6.24%
C 7606 6406 22 22 0.29% 0.34%
D 7606 6406 820 820 10.78% 12.80%

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 2102656 14375.57 713 699 146.2
A 15 223 1464900 10013.87 713 699 146.2
A 13 248 244365 1666.47 713 699 146.2
B 0 189 1304321 9180.35 727 705 142.0
B 5 255 571489 4019.59 727 705 142.0
B 3 112 65818 458.54 727 705 142.0
C 14 254 172601 994.51 742 749 172.8
C 1 3 28962 163.27 742 749 172.8
C 2 14 12476 67.86 742 749 172.8
D 13 249 1074309 6308.77 694 674 170.2
D 1 52 945015 5549.03 694 674 170.2
D 5 235 589265 3458.61 694 674 170.2

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