ASTROSAT CZTI

Data Quality Report

Orbit 50525

Creation date: 2025-01-30T14:13:19.945286
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/AS1T05_239T01_9000006444_50525cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50525cztM0_level2_quad_clean.evt
Size (bytes)704,171,52087,638,400
Size671.6 MB 83.6 MB
Events in quadrant A6,253,024565,565
Events in quadrant B7,138,704528,283
Events in quadrant C5,708,446588,778
Events in quadrant D6,438,633496,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232241
B0260491
C0217101
D0240337

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A680388312.979568%
B6804175725.823045%
C68044005.878895%
D6803104815.404968%

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 7353 6804 616 616 8.38% 9.05%
B 7354 6804 1435 1435 19.51% 21.09%
C 7354 6805 280 280 3.81% 4.11%
D 7353 6804 910 910 12.38% 13.37%

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 12 250 1501171 8811.8 692 675 170.3
A 4 249 633203 3714.58 692 675 170.3
A 12 15 484863 2843.44 692 675 170.3
B 7 0 4176388 31013.52 624 603 134.6
B 4 170 131442 971.74 624 603 134.6
B 0 155 43959 322.0 624 603 134.6
C 15 196 706797 3759.78 685 679 187.8
C 12 247 429496 2283.27 685 679 187.8
C 15 232 285565 1516.9 685 679 187.8
D 6 42 2958089 16338.76 643 621 181.0
D 2 249 217044 1195.64 643 621 181.0
D 7 61 131637 723.81 643 621 181.0

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