ASTROSAT CZTI

Data Quality Report

Orbit 56897

Creation date: 2026-04-04T11:54:36.831097
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_083T14_9000006564_56897cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56897cztM0_level2_quad_clean.evt
Size (bytes)463,772,16085,279,680
Size442.3 MB 81.3 MB
Events in quadrant A4,613,706519,878
Events in quadrant B3,122,435617,109
Events in quadrant C3,176,766557,714
Events in quadrant D5,782,259463,833

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182961
B0138951
C0133772
D0214521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A606687414.408177%
B60662053.379492%
C60661181.945269%
D606695915.809430%

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 7096 6066 620 620 8.74% 10.22%
B 7096 6067 79 79 1.11% 1.30%
C 7096 6067 40 40 0.56% 0.66%
D 7096 6067 829 829 11.68% 13.66%

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 64 1937695 13191.82 590 574 146.8
A 3 62 280096 1903.55 590 574 146.8
A 3 14 43061 289.33 590 574 146.8
B 10 16 407298 3043.62 623 600 133.6
B 0 245 41300 304.59 623 600 133.6
B 10 247 34062 250.42 623 600 133.6
C 1 16 354785 2064.29 626 621 171.6
C 13 3 95722 554.31 626 621 171.6
C 1 12 92942 538.11 626 621 171.6
D 8 160 1481945 8852.79 590 562 167.3
D 2 249 1363191 8143.11 590 562 167.3
D 8 240 215733 1285.87 590 562 167.3

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