ASTROSAT CZTI

Data Quality Report

Orbit 56070

Creation date: 2026-02-09T16:09:46.471812
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_083T03_9000006548_56070cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56070cztM0_level2_quad_clean.evt
Size (bytes)382,003,20089,104,320
Size364.3 MB 85.0 MB
Events in quadrant A3,962,418569,765
Events in quadrant B2,851,613629,913
Events in quadrant C3,977,534547,746
Events in quadrant D2,877,847527,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161461
B0127951
C0162371
D0130671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60513105.123120%
B6052841.387971%
C60522454.048249%
D6052550.908790%

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 7171 6051 265 265 3.70% 4.38%
B 7172 6052 10 10 0.14% 0.17%
C 7172 6052 193 193 2.69% 3.19%
D 7172 6052 28 28 0.39% 0.46%

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 12 115 1138468 7087.06 644 627 160.6
A 15 32 133242 825.99 644 627 160.6
A 3 14 93162 576.36 644 627 160.6
B 0 213 63862 463.22 642 621 136.5
B 9 254 59347 430.15 642 621 136.5
B 5 172 44486 321.3 642 621 136.5
C 13 3 794494 4650.1 613 605 170.7
C 15 147 482267 2821.27 613 605 170.7
C 6 9 98075 570.91 613 605 170.7
D 8 240 129604 728.87 622 595 177.0
D 2 249 75065 420.74 622 595 177.0
D 5 173 52365 292.49 622 595 177.0

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