ASTROSAT CZTI

Data Quality Report

Orbit 20210609_C06_003T01_9000004452_level2

Creation date: 2025-12-26T18:18:12.415080
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/AS1C06_003T01_9000004452cztM0_level2.fits modeM0/AS1C06_003T01_9000004452cztM0_level2_quad_clean.evt
Size (bytes)765,501,120864,996,480
Size730.0 MB 824.9 MB
Events in quadrant A4,851,5705,666,135
Events in quadrant B4,513,7705,544,895
Events in quadrant C4,582,8925,301,412
Events in quadrant D3,741,7404,198,684

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01728490
B02522280
C01880660
D02997800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016300
B016300
C016300
D016300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8003316072.007922%
B8003329653.704722%
C8003324663.081229%
D800331132514.150413%

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 92328 80021 0 0 0.00% 0.00%
B 92328 79992 0 0 0.00% 0.00%
C 92328 80015 0 0 0.00% 0.00%
D 92328 79603 0 0 0.00% 0.00%

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 0 29 3980 9.18 1263 1195 303.2
A 7 110 3922 8.99 1263 1195 303.2
A 9 19 3577 7.85 1263 1195 303.2
B 2 9 3591 10.5 1198 1150 232.5
B 3 80 3061 8.22 1198 1150 232.5
B 2 8 3026 8.07 1198 1150 232.5
C 12 241 3277 6.99 1214 1140 305.5
C 3 187 3176 6.66 1214 1140 305.5
C 9 209 3051 6.26 1214 1140 305.5
D 7 3 2651 5.89 1071 978 284.3
D 10 189 2617 5.77 1071 978 284.3
D 6 231 2594 5.68 1071 978 284.3

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