ASTROSAT CZTI

Data Quality Report

Orbit 51175

Creation date: 2025-03-15T10:19:00.080611
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/AS1C07_001T01_9000006454_51175cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51175cztM0_level2_quad_clean.evt
Size (bytes)715,135,68095,918,400
Size682.0 MB 91.5 MB
Events in quadrant A6,011,242625,251
Events in quadrant B4,655,941688,809
Events in quadrant C9,071,251565,873
Events in quadrant D6,211,462553,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226532
B0186532
C0316662
D0233932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67633645.382227%
B67633665.411799%
C6763113416.767707%
D676268110.070985%

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 7913 6764 316 316 3.99% 4.67%
B 7913 6764 242 242 3.06% 3.58%
C 7913 6764 1282 1282 16.20% 18.95%
D 7912 6763 855 855 10.81% 12.64%

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 3 1206232 7025.61 688 674 171.6
A 4 4 711899 4144.79 688 674 171.6
A 12 80 367409 2137.21 688 674 171.6
B 8 128 419855 2873.05 691 665 145.9
B 10 60 341321 2334.79 691 665 145.9
B 5 185 264162 1805.96 691 665 145.9
C 12 247 4617187 25506.99 661 656 181.0
C 4 12 544020 3002.16 661 656 181.0
C 15 158 467376 2578.69 661 656 181.0
D 2 62 2470868 13469.29 655 630 183.4
D 3 12 221392 1203.73 655 630 183.4
D 2 216 157714 856.52 655 630 183.4

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