ASTROSAT CZTI

Data Quality Report

Orbit 26060

Creation date: 2024-06-27T19:24:23.676873
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/AS1A09_142T01_9000003766_26060cztM0_level2.evt modeM0/AS1A09_142T01_9000003766_26060cztM0_level2_quad_clean.evt
Size (bytes)547,799,040105,390,720
Size522.4 MB 100.5 MB
Events in quadrant A3,332,103700,280
Events in quadrant B3,499,428701,679
Events in quadrant C3,366,244668,045
Events in quadrant D5,904,900621,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146920
B0152430
C0146760
D0224890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7179290.403956%
B7180610.849582%
C7180781.086351%
D718074710.403900%

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 7494 7180 1 1 0.01% 0.01%
B 7495 7180 6 6 0.08% 0.08%
C 7495 7181 2 2 0.03% 0.03%
D 7495 7181 698 698 9.31% 9.72%

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 13 26144 146.94 853 833 172.3
A 13 254 12645 68.57 853 833 172.3
A 7 16 8450 44.22 853 833 172.3
B 0 229 64851 395.63 846 823 161.8
B 5 172 38400 232.19 846 823 161.8
B 0 190 33380 201.17 846 823 161.8
C 14 238 129187 664.2 821 826 193.3
C 2 16 16072 78.89 821 826 193.3
C 8 128 8914 41.85 821 826 193.3
D 7 38 1337947 6545.56 795 774 204.3
D 1 3 703824 3441.48 795 774 204.3
D 1 52 491773 2403.48 795 774 204.3

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