ASTROSAT CZTI

Data Quality Report

Orbit 56603

Creation date: 2026-03-15T19:17:55.398103
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_083T06_9000006558_56603cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56603cztM0_level2_quad_clean.evt
Size (bytes)1,277,366,400261,861,120
Size1.2 GB 249.7 MB
Events in quadrant A9,787,8131,737,194
Events in quadrant B9,060,6841,879,482
Events in quadrant C10,434,8411,614,880
Events in quadrant D16,516,9071,377,583

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0428584
B0405894
C0449614
D0621724

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191525432.835213%
B191524632.417502%
C191529915.174394%
D19153219511.460346%

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 20387 19153 184 184 0.90% 0.96%
B 20386 19151 55 55 0.27% 0.29%
C 20386 19152 382 382 1.87% 1.99%
D 20388 19154 1999 1999 9.80% 10.44%

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 8 249 613384 1214.99 2048 1994 503.2
A 13 248 287575 567.52 2048 1994 503.2
A 4 159 236901 466.82 2048 1994 503.2
B 5 185 276511 627.21 2035 1956 437.7
B 10 247 195074 441.17 2035 1956 437.7
B 4 21 191189 432.3 2035 1956 437.7
C 13 3 1016831 1874.19 1978 1956 541.5
C 12 252 566252 1042.09 1978 1956 541.5
C 15 230 378762 695.85 1978 1956 541.5
D 2 249 2501081 4630.73 1916 1823 539.7
D 10 199 2289932 4239.5 1916 1823 539.7
D 6 239 954306 1764.8 1916 1823 539.7

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