ASTROSAT CZTI

Data Quality Report

Orbit 43706

Creation date: 2024-06-27T22:54:47.130962
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_008T02_9000005900_43706cztM0_level2.fits modeM0/AS1A13_008T02_9000005900_43706cztM0_level2_quad_clean.evt
Size (bytes)750,706,560108,247,680
Size715.9 MB 103.2 MB
Events in quadrant A9,297,761747,953
Events in quadrant B3,837,372820,545
Events in quadrant C5,495,266710,497
Events in quadrant D8,656,862545,812

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321923
B0154213
C0207143
D0302673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648986813.376483%
B64892343.606103%
C648981212.513484%
D6489198730.621051%

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 7619 6490 128 128 1.68% 1.97%
B 7619 6490 64 64 0.84% 0.99%
C 7619 6490 503 503 6.60% 7.75%
D 7619 6490 1361 1361 17.86% 20.97%

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 4514841 27314.45 798 783 165.3
A 10 83 913307 5521.66 798 783 165.3
A 14 63 536319 3240.51 798 783 165.3
B 5 235 364191 2283.48 812 788 159.1
B 4 206 97173 605.64 812 788 159.1
B 0 199 71802 446.22 812 788 159.1
C 15 157 1830355 10500.96 747 752 174.2
C 3 233 656145 3761.61 747 752 174.2
C 15 173 28863 161.34 747 752 174.2
D 12 33 3463976 17945.15 681 664 193.0
D 7 80 498690 2580.52 681 664 193.0
D 13 249 377258 1951.32 681 664 193.0

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