ASTROSAT CZTI

Data Quality Report

Orbit 55069

Creation date: 2025-12-02T14:04:20.169004
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_025T01_9000006530_55069cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55069cztM0_level2_quad_clean.evt
Size (bytes)431,720,64092,661,120
Size411.7 MB 88.4 MB
Events in quadrant A3,861,187602,547
Events in quadrant B3,992,808637,707
Events in quadrant C3,132,276591,760
Events in quadrant D4,506,560536,149

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159471
B0162452
C0139741
D0177291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62772674.253624%
B62764497.154238%
C6277550.876215%
D62772664.237693%

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 7422 6279 220 220 2.96% 3.50%
B 7421 6278 221 221 2.98% 3.52%
C 7422 6279 38 38 0.51% 0.61%
D 7422 6279 253 253 3.41% 4.03%

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 15 32 869520 5180.51 680 663 167.7
A 0 8 153278 909.96 680 663 167.7
A 0 250 138705 823.07 680 663 167.7
B 5 185 1300594 9153.93 664 642 142.0
B 10 247 24868 170.59 664 642 142.0
B 12 111 17339 117.58 664 642 142.0
C 13 3 152528 827.29 668 662 183.6
C 14 254 119298 646.27 668 662 183.6
C 9 38 110885 600.44 668 662 183.6
D 6 239 701625 3778.13 650 623 185.5
D 9 1 466528 2511.05 650 623 185.5
D 3 224 211464 1136.35 650 623 185.5

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