ASTROSAT CZTI

Data Quality Report

Orbit 54169

Creation date: 2025-10-02T22:46:44.509999
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/AS1A14_012T01_9000006512_54169cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54169cztM0_level2_quad_clean.evt
Size (bytes)548,760,96083,603,520
Size523.3 MB 79.7 MB
Events in quadrant A3,260,259595,526
Events in quadrant B6,069,649544,102
Events in quadrant C3,823,113558,716
Events in quadrant D6,679,520401,140

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139881
B0224181
C0155791
D0243131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61861342.166182%
B6186107817.426447%
C61861522.457161%
D6186162326.236663%

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 7216 6187 83 83 1.15% 1.34%
B 7216 6187 676 676 9.37% 10.93%
C 7216 6187 91 91 1.26% 1.47%
D 7216 6187 1323 1323 18.33% 21.38%

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 7 29 181420 1106.04 650 633 163.5
A 15 174 134840 821.06 650 633 163.5
A 3 14 117187 713.06 650 633 163.5
B 5 172 1210800 9566.26 593 573 126.5
B 15 20 822843 6499.65 593 573 126.5
B 6 255 780063 6161.49 593 573 126.5
C 10 171 360941 2081.4 629 624 173.1
C 9 38 296859 1711.23 629 624 173.1
C 12 252 255265 1470.96 629 624 173.1
D 8 176 4003058 26711.75 522 496 149.8
D 3 12 394333 2628.34 522 496 149.8
D 5 173 41395 272.95 522 496 149.8

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