ASTROSAT CZTI

Data Quality Report

Orbit 53251

Creation date: 2025-08-02T03:13:56.733506
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/AS1C09_011T08_9000006492_53251cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53251cztM0_level2_quad_clean.evt
Size (bytes)584,015,04090,809,280
Size557.0 MB 86.6 MB
Events in quadrant A4,804,666602,754
Events in quadrant B4,088,906671,895
Events in quadrant C8,353,624464,763
Events in quadrant D3,883,865571,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185492
B0163432
C0291112
D0157182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62834216.700621%
B62831522.419226%
C6283178128.346331%
D62831001.591596%

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 7473 6284 390 390 5.22% 6.21%
B 7473 6284 88 88 1.18% 1.40%
C 7472 6282 1527 1527 20.44% 24.31%
D 7473 6284 93 93 1.24% 1.48%

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 7 206 571501 3450.19 659 644 165.5
A 12 115 332720 2007.03 659 644 165.5
A 3 62 251636 1516.97 659 644 165.5
B 12 33 517787 3663.66 666 643 141.2
B 2 249 244269 1725.94 666 643 141.2
B 4 81 194934 1376.43 666 643 141.2
C 15 224 3515273 22044.53 583 578 159.4
C 15 165 753474 4722.24 583 578 159.4
C 4 5 751757 4711.47 583 578 159.4
D 6 239 176161 935.7 657 625 187.6
D 9 19 128140 679.72 657 625 187.6
D 12 128 106374 563.7 657 625 187.6

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