ASTROSAT CZTI

Data Quality Report

Orbit 15201

Creation date: 2024-06-27T17:05:12.858474
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_069T01_9000002242_15201cztM0_level2.evt modeM0/AS1T02_069T01_9000002242_15201cztM0_level2_quad_clean.evt
Size (bytes)500,860,80079,657,920
Size477.7 MB 76.0 MB
Events in quadrant A3,423,769491,759
Events in quadrant B4,191,765484,399
Events in quadrant C3,557,139482,310
Events in quadrant D3,517,781462,908

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146683
B0169342
C0148992
D0154672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7040470.667614%
B70402483.522727%
C7040310.440341%
D7040711.008523%

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 7696 7042 0 0 0.00% 0.00%
B 7696 7042 120 120 1.56% 1.70%
C 7696 7042 1 1 0.01% 0.01%
D 7696 7042 52 52 0.68% 0.74%

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 12 189 133660 769.3 852 834 172.7
A 15 239 9613 50.85 852 834 172.7
A 0 226 7618 39.29 852 834 172.7
B 3 112 604929 3689.7 848 826 163.7
B 4 173 101901 617.34 848 826 163.7
B 3 64 76309 461.03 848 826 163.7
C 3 233 320039 1659.35 829 834 192.4
C 7 247 6841 31.23 829 834 192.4
C 13 61 6154 27.66 829 834 192.4
D 2 33 110629 546.84 819 798 200.8
D 13 172 81302 400.82 819 798 200.8
D 7 223 53157 260.69 819 798 200.8

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