ASTROSAT CZTI

Data Quality Report

Orbit 57438

Creation date: 2026-05-10T22:01:08.013266
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_102T01_9000006572_57438cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57438cztM0_level2_quad_clean.evt
Size (bytes)455,846,40089,173,440
Size434.7 MB 85.0 MB
Events in quadrant A4,314,104576,016
Events in quadrant B2,832,362644,918
Events in quadrant C5,236,011524,788
Events in quadrant D4,016,075527,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173591
B0129251
C0199646
D0162961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61154266.966476%
B6115971.586263%
C611467611.056591%
D61152954.824203%

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 7235 6116 134 134 1.85% 2.19%
B 7235 6116 18 18 0.25% 0.29%
C 7234 6115 589 589 8.14% 9.63%
D 7235 6116 258 258 3.57% 4.22%

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 0 12 1604185 9993.85 654 636 160.5
A 5 242 93629 579.56 654 636 160.5
A 3 14 55434 341.52 654 636 160.5
B 0 213 64754 463.71 652 629 138.3
B 10 247 50099 357.73 652 629 138.3
B 0 245 24704 174.09 652 629 138.3
C 15 224 2631178 15829.21 605 601 166.2
C 14 254 97673 584.12 605 601 166.2
C 14 96 41555 246.43 605 601 166.2
D 2 249 517420 2881.87 632 604 179.3
D 15 142 319172 1776.4 632 604 179.3
D 15 94 225669 1255.01 632 604 179.3

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