ASTROSAT CZTI

Data Quality Report

Orbit 15390

Creation date: 2024-06-27T17:07:52.843244
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/AS1C03_001T01_9000002270_15390cztM0_level2.evt modeM0/AS1C03_001T01_9000002270_15390cztM0_level2_quad_clean.evt
Size (bytes)894,447,360105,534,720
Size853.0 MB 100.6 MB
Events in quadrant A3,655,719737,946
Events in quadrant B5,862,383691,638
Events in quadrant C3,423,956746,078
Events in quadrant D13,660,720517,144

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159723
B0224512
C0149792
D0455672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7208600.832408%
B720881611.320755%
C7208190.263596%
D7208373851.859046%

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 7639 7210 25 25 0.33% 0.35%
B 7639 7210 583 583 7.63% 8.09%
C 7639 7210 0 0 0.00% 0.00%
D 7639 7210 3410 3410 44.64% 47.30%

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 14 238 374277 2208.68 827 810 169.1
A 9 143 47376 275.39 827 810 169.1
A 14 237 27213 156.15 827 810 169.1
B 10 245 2169085 14527.41 792 773 149.3
B 7 220 143279 954.77 792 773 149.3
B 8 3 130459 868.88 792 773 149.3
C 3 233 211804 1117.34 818 820 188.8
C 7 247 14700 73.51 818 820 188.8
C 7 238 7847 37.21 818 820 188.8
D 13 122 9160253 55437.55 659 637 165.2
D 9 68 733947 4438.28 659 637 165.2
D 5 222 466583 2820.09 659 637 165.2

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