ASTROSAT CZTI

Data Quality Report

Orbit 15748

Creation date: 2024-06-27T17:12:58.830398
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/AS1T02_088T01_9000002332_15748cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15748cztM0_level2_quad_clean.evt
Size (bytes)459,800,64073,647,360
Size438.5 MB 70.2 MB
Events in quadrant A3,476,672447,204
Events in quadrant B3,446,626464,486
Events in quadrant C3,371,252439,205
Events in quadrant D3,187,016423,542

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142573
B0140552
C0137072
D0136832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6532811.240049%
B6532370.566442%
C6532671.025720%
D6532120.183711%

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 7858 6534 19 19 0.24% 0.29%
B 7858 6534 2 2 0.03% 0.03%
C 7858 6533 0 0 0.00% 0.00%
D 7858 6534 2 2 0.03% 0.03%

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 15 239 232266 1390.79 833 819 166.4
A 15 69 16363 93.41 833 819 166.4
A 8 35 13019 73.31 833 819 166.4
B 4 251 76102 475.99 845 826 158.1
B 12 111 18259 110.23 845 826 158.1
B 0 198 17404 104.83 845 826 158.1
C 14 238 128907 684.3 806 813 187.2
C 3 233 66889 352.99 806 813 187.2
C 7 247 16086 81.59 806 813 187.2
D 1 52 91057 460.42 805 782 196.1
D 2 234 26218 129.73 805 782 196.1
D 5 51 18775 91.77 805 782 196.1

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