ASTROSAT CZTI

Data Quality Report

Orbit 39487

Creation date: 2024-06-27T22:05:12.033058
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_001T02_9000005486_39487cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39487cztM0_level2_quad_clean.evt
Size (bytes)541,578,240133,202,880
Size516.5 MB 127.0 MB
Events in quadrant A5,949,208883,495
Events in quadrant B4,162,354918,269
Events in quadrant C4,660,615877,233
Events in quadrant D4,654,145797,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229023
B0179752
C0191232
D0196312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80082392.984515%
B8008770.961538%
C8008740.924076%
D80082302.872128%

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 11383 8010 264 264 2.32% 3.30%
B 11383 8010 45 45 0.40% 0.56%
C 11383 8010 62 62 0.54% 0.77%
D 11383 8010 172 172 1.51% 2.15%

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 15 222 1800182 10325.83 860 841 174.3
A 10 83 569785 3264.98 860 841 174.3
A 15 174 163514 933.53 860 841 174.3
B 5 255 589881 3560.46 864 838 165.4
B 5 172 156510 940.96 864 838 165.4
B 12 111 21410 124.35 864 838 165.4
C 15 208 706122 3586.95 849 856 196.6
C 15 214 331294 1680.59 849 856 196.6
C 9 187 283832 1439.2 849 856 196.6
D 13 249 554359 2714.39 837 813 203.9
D 12 227 337482 1650.9 837 813 203.9
D 2 249 295203 1443.58 837 813 203.9

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