ASTROSAT CZTI

Data Quality Report

Orbit 50681

Creation date: 2025-02-10T01:31:26.135014
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/AS1T05_241T01_9000006446_50681cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50681cztM0_level2_quad_clean.evt
Size (bytes)465,451,20091,416,960
Size443.9 MB 87.2 MB
Events in quadrant A3,554,569597,559
Events in quadrant B4,535,576638,647
Events in quadrant C5,160,802559,406
Events in quadrant D3,503,479545,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147471
B0176591
C0194831
D0145997

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6120961.568627%
B61202113.447712%
C61214146.763601%
D61201001.633987%

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 7275 6120 78 78 1.07% 1.27%
B 7275 6121 134 134 1.84% 2.19%
C 7276 6121 364 364 5.00% 5.95%
D 7275 6121 68 68 0.93% 1.11%

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 4 3 218688 1367.44 650 634 159.5
A 8 38 161955 1011.66 650 634 159.5
A 10 253 161331 1007.74 650 634 159.5
B 4 170 1072621 7940.29 641 621 135.0
B 0 229 324566 2399.46 641 621 135.0
B 5 185 222252 1641.62 641 621 135.0
C 13 113 775357 4471.4 632 626 173.3
C 4 5 506688 2920.76 632 626 173.3
C 1 44 345382 1989.78 632 626 173.3
D 2 249 256273 1451.08 637 614 176.2
D 7 96 138098 780.34 637 614 176.2
D 15 185 137162 775.03 637 614 176.2

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