ASTROSAT CZTI

Data Quality Report

Orbit 58470

Creation date: 2026-07-19T08:08:56.122571
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_044T04_9000006592_58470cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58470cztM0_level2_quad_clean.evt
Size (bytes)470,381,76099,956,160
Size448.6 MB 95.3 MB
Events in quadrant A3,457,513673,776
Events in quadrant B5,558,643671,105
Events in quadrant C4,053,231623,977
Events in quadrant D3,824,202592,568

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147902
B0208804
C0167732
D0160512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66671151.724914%
B666674711.206121%
C66663154.725473%
D66671882.819859%

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 9077 6669 31 31 0.34% 0.46%
B 9076 6668 544 544 5.99% 8.16%
C 9076 6668 258 258 2.84% 3.87%
D 9077 6669 156 156 1.72% 2.34%

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 10 17 266988 1408.85 766 747 189.0
A 3 14 86927 456.03 766 747 189.0
A 3 245 35390 183.32 766 747 189.0
B 2 249 1301289 8331.1 727 700 156.1
B 5 172 1077683 6898.76 727 700 156.1
B 0 157 97990 623.2 727 700 156.1
C 1 12 504777 2533.98 727 722 198.9
C 6 223 355523 1783.65 727 722 198.9
C 12 249 67823 337.33 727 722 198.9
D 8 240 780595 3764.33 727 696 207.2
D 5 173 43732 207.72 727 696 207.2
D 2 120 42480 201.68 727 696 207.2

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