ASTROSAT CZTI

Data Quality Report

Orbit 46869

Creation date: 2024-06-27T23:28:44.169237
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/AS1A13_053T01_9000006274_46869cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46869cztM0_level2_quad_clean.evt
Size (bytes)714,908,160102,121,920
Size681.8 MB 97.4 MB
Events in quadrant A6,377,681717,178
Events in quadrant B4,831,798720,939
Events in quadrant C8,351,768563,445
Events in quadrant D6,370,098610,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232541
B0190592
C0297751
D0238001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68803445.000000%
B68794937.166739%
C6880179526.090116%
D688079111.497093%

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 7480 6881 67 67 0.90% 0.97%
B 7479 6880 219 219 2.93% 3.18%
C 7480 6881 1559 1559 20.84% 22.66%
D 7480 6881 668 668 8.93% 9.71%

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 10 83 3280231 21369.47 747 732 153.5
A 13 248 176222 1143.51 747 732 153.5
A 0 243 10765 65.38 747 732 153.5
B 3 112 1669184 11452.45 743 720 145.7
B 4 171 89201 607.34 743 720 145.7
B 5 173 59752 405.2 743 720 145.7
C 1 241 5670302 35655.05 678 681 159.0
C 14 254 24642 150.69 678 681 159.0
C 1 3 11219 66.27 678 681 159.0
D 12 233 1428568 8033.83 708 685 177.7
D 13 249 1028359 5782.1 708 685 177.7
D 8 48 662939 3726.1 708 685 177.7

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