ASTROSAT CZTI

Data Quality Report

Orbit 57204

Creation date: 2026-05-01T10:43:47.729191
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_070T08_9000006568_57204cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57204cztM0_level2_quad_clean.evt
Size (bytes)596,309,76087,514,560
Size568.7 MB 83.5 MB
Events in quadrant A2,754,981642,386
Events in quadrant B3,603,715677,708
Events in quadrant C5,941,357539,786
Events in quadrant D9,281,454348,027

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129502
B0152382
C0221226
D0320062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6333120.189484%
B63332013.173851%
C633284713.376500%
D6332247339.055591%

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 7547 6332 3 3 0.04% 0.05%
B 7547 6332 136 136 1.80% 2.15%
C 7546 6331 800 800 10.60% 12.64%
D 7546 6331 2468 2468 32.71% 38.98%

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 3 14 31467 181.96 687 670 169.3
A 8 6 17175 97.52 687 670 169.3
A 13 248 15461 87.39 687 670 169.3
B 5 185 495498 3377.89 679 653 146.5
B 7 252 119697 812.61 679 653 146.5
B 10 16 75653 511.96 679 653 146.5
C 15 224 3301167 19246.33 622 615 171.5
C 14 254 74048 428.21 622 615 171.5
C 7 247 34457 197.34 622 615 171.5
D 12 33 6625147 46969.6 490 465 141.0
D 2 249 225153 1593.06 490 465 141.0
D 12 128 195954 1386.03 490 465 141.0

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