ASTROSAT CZTI

Data Quality Report

Orbit 17750

Creation date: 2024-06-27T17:40:27.456765
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/AS1T03_070T05_9000002640_17750cztM0_level2.evt modeM0/AS1T03_070T05_9000002640_17750cztM0_level2_quad_clean.evt
Size (bytes)372,559,68072,423,360
Size355.3 MB 69.1 MB
Events in quadrant A2,494,827460,885
Events in quadrant B3,103,442457,117
Events in quadrant C2,610,062448,041
Events in quadrant D2,703,395445,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111831
B0127511
C0112751
D0119241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54361252.299485%
B54372674.910796%
C54371372.519772%
D54371422.611734%

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 5816 5437 0 0 0.00% 0.00%
B 5817 5438 78 78 1.34% 1.43%
C 5817 5438 2 2 0.03% 0.04%
D 5817 5438 42 42 0.72% 0.77%

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 0 226 5512 36.61 648 633 133.3
A 3 137 4971 32.55 648 633 133.3
A 12 194 4768 31.03 648 633 133.3
B 10 245 352146 2830.59 642 624 124.2
B 7 220 150883 1209.94 642 624 124.2
B 0 219 25830 202.97 642 624 124.2
C 14 238 94019 630.9 624 626 148.0
C 5 218 39827 264.82 624 626 148.0
C 0 207 25434 167.59 624 626 148.0
D 2 165 97623 631.56 631 613 153.6
D 5 222 90176 583.08 631 613 153.6
D 7 38 41568 266.63 631 613 153.6

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