ASTROSAT CZTI

Data Quality Report

Orbit 33920

Creation date: 2024-06-27T20:54:11.719775
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/AS1T04_091T01_9000004842_33920cztM0_level2.evt modeM0/AS1T04_091T01_9000004842_33920cztM0_level2_quad_clean.evt
Size (bytes)561,674,88077,448,960
Size535.7 MB 73.9 MB
Events in quadrant A4,076,504493,677
Events in quadrant B3,850,755488,163
Events in quadrant C3,380,243499,848
Events in quadrant D5,318,109465,563

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159152
B0150881
C0134281
D0196081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5695711.246708%
B56953656.409131%
C56951142.001756%
D56954708.252853%

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 7068 5696 0 0 0.00% 0.00%
B 7068 5696 241 241 3.41% 4.23%
C 7068 5696 84 84 1.19% 1.47%
D 7068 5696 343 343 4.85% 6.02%

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 15 169 1485484 11046.57 664 650 134.4
A 10 83 13518 95.73 664 650 134.4
A 13 254 10499 73.27 664 650 134.4
B 5 172 901828 7333.6 642 625 122.9
B 0 229 132501 1073.15 642 625 122.9
B 5 255 58845 473.77 642 625 122.9
C 0 10 329016 2208.58 641 647 148.7
C 15 214 246246 1651.87 641 647 148.7
C 0 207 175803 1178.08 641 647 148.7
D 8 195 1430390 8444.4 624 613 169.3
D 1 47 447259 2637.94 624 613 169.3
D 12 235 262439 1546.37 624 613 169.3

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