ASTROSAT CZTI

Data Quality Report

Orbit 53425

Creation date: 2025-08-14T11:20:04.735605
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_011T09_9000006494_53425cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53425cztM0_level2_quad_clean.evt
Size (bytes)729,028,80076,155,840
Size695.3 MB 72.6 MB
Events in quadrant A3,768,569581,181
Events in quadrant B6,620,294531,085
Events in quadrant C12,561,285248,830
Events in quadrant D3,573,503527,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152971
B02386413
C0413847
D0147481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59712604.354380%
B5969122820.572960%
C5971368361.681460%
D59711582.646123%

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 7056 5971 194 194 2.75% 3.25%
B 7055 5968 807 807 11.44% 13.52%
C 7055 5970 3686 3686 52.25% 61.74%
D 7056 5971 132 132 1.87% 2.21%

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 15 174 622794 3929.42 632 614 158.3
A 3 63 190569 1199.67 632 614 158.3
A 3 62 151781 954.7 632 614 158.3
B 4 171 1467095 11693.14 588 568 125.4
B 4 206 1351128 10768.5 588 568 125.4
B 0 171 577596 4600.85 588 568 125.4
C 9 38 5244610 44194.91 429 425 118.7
C 1 241 2051308 17283.64 429 425 118.7
C 15 224 2040802 17195.1 429 425 118.7
D 3 12 255817 1438.28 618 590 177.5
D 2 153 174620 980.71 618 590 177.5
D 12 1 120546 675.99 618 590 177.5

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