ASTROSAT CZTI

Data Quality Report

Orbit 58656

Creation date: 2026-07-31T20:25:45.504471
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_004T06_9000006594_58656cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58656cztM0_level2_quad_clean.evt
Size (bytes)258,238,08055,212,480
Size246.3 MB 52.7 MB
Events in quadrant A1,728,309369,360
Events in quadrant B2,167,917391,312
Events in quadrant C2,025,020352,778
Events in quadrant D3,357,732304,505

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08015636
B09601956
C08976668
D013344907

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0775
B0786
C0786
D0786

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A359650.139043%
B3578722.012297%
C3584120.334821%
D357741611.629857%

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 7609 3646 0 0 0.00% 0.00%
B 7608 3609 52 52 0.68% 1.44%
C 7609 3622 11 11 0.14% 0.30%
D 7609 3604 374 374 4.92% 10.38%

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 52850 505.99 415 404 103.7
A 10 16 20633 195.17 415 404 103.7
A 10 251 13970 130.88 415 404 103.7
B 5 185 344718 3937.61 402 388 87.4
B 2 249 48129 545.95 402 388 87.4
B 0 186 40977 464.16 402 388 87.4
C 15 217 222876 1999.62 398 393 111.3
C 13 3 183709 1647.6 398 393 111.3
C 12 249 36331 323.0 398 393 111.3
D 11 129 854619 7891.74 380 363 108.2
D 7 222 319613 2949.28 380 363 108.2
D 8 240 234476 2162.77 380 363 108.2

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