ASTROSAT CZTI

Data Quality Report

Orbit 53570

Creation date: 2025-08-23T15:02:27.395143
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_004T05_9000006502_53570cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53570cztM0_level2_quad_clean.evt
Size (bytes)861,753,60085,368,960
Size821.8 MB 81.4 MB
Events in quadrant A7,731,775537,009
Events in quadrant B4,480,900710,071
Events in quadrant C7,439,657569,685
Events in quadrant D11,720,717293,940

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276674
B0177972
C0267692
D0395812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6796171525.235433%
B67984196.163578%
C6798112416.534275%
D6798385856.751986%

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 8892 6798 1250 1250 14.06% 18.39%
B 8893 6800 199 199 2.24% 2.93%
C 8893 6800 912 912 10.26% 13.41%
D 8893 6797 2294 2294 25.80% 33.75%

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 3 63 1924160 11129.73 702 685 172.8
A 12 115 1505872 8709.4 702 685 172.8
A 3 62 932630 5392.48 702 685 172.8
B 2 249 518646 3183.64 762 738 162.7
B 5 185 253739 1555.23 762 738 162.7
B 7 129 229626 1407.0 762 738 162.7
C 15 224 2034435 10348.77 711 706 196.5
C 1 241 636229 3233.9 711 706 196.5
C 15 178 608378 3092.18 711 706 196.5
D 8 176 6086265 48104.93 448 429 126.5
D 2 172 3274394 25878.75 448 429 126.5
D 3 12 137880 1086.47 448 429 126.5

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