ASTROSAT CZTI

Data Quality Report

Orbit 49727

Creation date: 2024-12-10T14:16:09.231477
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/AS1T05_233T01_9000006438_49727cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49727cztM0_level2_quad_clean.evt
Size (bytes)1,251,648,00059,302,080
Size1.2 GB 56.6 MB
Events in quadrant A16,002,963452,262
Events in quadrant B6,367,791678,268
Events in quadrant C8,176,73610,293
Events in quadrant D15,249,096164,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0522860
B0236780
C0291850
D0500330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6903569482.485876%
B6904106015.353418%
C69046904100.000000%
D6903665196.349413%

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 7103 6905 5654 5654 79.60% 81.88%
B 7104 6906 775 775 10.91% 11.22%
C 7103 6903 339 339 4.77% 4.91%
D 7103 6902 4511 4511 63.51% 65.36%

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 7613708 49063.21 538 521 155.2
A 3 99 1121310 7222.93 538 521 155.2
A 3 130 909527 5858.09 538 521 155.2
B 10 128 2478674 16135.3 726 704 153.6
B 10 44 182639 1184.67 726 704 153.6
B 4 206 136281 882.81 726 704 153.6
C 15 180 2233004 105539.62 33 31 21.2
C 15 190 1914226 90472.85 33 31 21.2
C 0 193 1291950 61061.48 33 31 21.2
D 7 61 4124773 47984.26 232 220 86.0
D 15 40 2476100 28803.91 232 220 86.0
D 15 168 1308629 15221.78 232 220 86.0

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