ASTROSAT CZTI

Data Quality Report

Orbit 54417

Creation date: 2025-10-19T15:43:47.680598
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_126T19_9000006518_54417cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54417cztM0_level2_quad_clean.evt
Size (bytes)448,623,36091,054,080
Size427.8 MB 86.8 MB
Events in quadrant A2,832,764612,414
Events in quadrant B3,050,495649,461
Events in quadrant C4,100,202553,045
Events in quadrant D6,116,636488,217

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133991
B0139961
C0170781
D0226831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6508330.507068%
B6509971.490244%
C65093966.083884%
D650979512.213858%

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 7278 6508 2 2 0.03% 0.03%
B 7279 6510 53 53 0.73% 0.81%
C 7279 6510 351 351 4.82% 5.39%
D 7279 6509 743 743 10.21% 11.41%

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 11 3 99540 586.47 682 663 168.6
A 7 206 44235 258.44 682 663 168.6
A 4 3 28755 166.62 682 663 168.6
B 0 213 227456 1561.06 668 643 145.3
B 10 247 79132 540.21 668 643 145.3
B 0 197 36862 249.28 668 643 145.3
C 1 241 727190 4103.03 643 636 177.1
C 13 3 360942 2034.74 643 636 177.1
C 4 5 312567 1761.55 643 636 177.1
D 8 176 1948044 11325.74 607 579 172.0
D 7 70 1088451 6326.66 607 579 172.0
D 3 12 516670 3001.4 607 579 172.0

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