ASTROSAT CZTI

Data Quality Report

Orbit 01253

Creation date: 2024-06-27T14:09:53.793962
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/AS1G04_011T02_9000000226_01253cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01253cztM0_level2_quad_clean.evt
Size (bytes)1,213,286,40099,578,880
Size1.1 GB 95.0 MB
Events in quadrant A8,348,547672,350
Events in quadrant B9,512,512653,883
Events in quadrant C7,951,664650,755
Events in quadrant D10,478,986561,238

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296962
B0331091
C0285071
D0362211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6846420.613497%
B68461992.906807%
C6846110.160678%
D6846133519.500438%

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 7631 6846 262 262 3.43% 3.83%
B 7630 6845 642 642 8.41% 9.38%
C 7631 6846 114 114 1.49% 1.67%
D 7630 6845 1585 1585 20.77% 23.16%

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 14 210996 411.35 2101 2117 507.8
A 4 32 36233 67.19 2101 2117 507.8
A 12 243 18157 31.59 2101 2117 507.8
B 8 4 511906 995.23 2161 2170 512.2
B 5 191 346419 672.13 2161 2170 512.2
B 12 52 115091 220.47 2161 2170 512.2
C 15 241 307700 565.28 1935 1999 540.8
C 3 79 33061 57.44 1935 1999 540.8
C 3 111 28951 49.84 1935 1999 540.8
D 10 84 3325837 6409.07 1675 1731 518.7
D 13 169 427670 821.23 1675 1731 518.7
D 2 88 162165 309.33 1675 1731 518.7

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