ASTROSAT CZTI

Data Quality Report

Orbit 50742

Creation date: 2025-02-14T04:22:01.219235
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/AS1C07_001T01_9000006450_50742cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50742cztM0_level2_quad_clean.evt
Size (bytes)786,798,72087,698,880
Size750.3 MB 83.6 MB
Events in quadrant A9,156,997514,525
Events in quadrant B3,598,063698,188
Events in quadrant C7,187,956556,199
Events in quadrant D8,661,704416,919

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03199486
B01554952
C026251138
D030547158

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6728163324.271700%
B67301341.991085%
C672392413.743864%
D6722207230.824159%

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 7669 6733 1649 1649 21.50% 24.49%
B 7677 6737 51 51 0.66% 0.76%
C 7677 6724 772 772 10.06% 11.48%
D 7677 6723 2025 2025 26.38% 30.12%

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 4 4 5797035 34781.07 665 648 166.7
A 4 3 176718 1056.5 665 648 166.7
A 8 38 118304 705.99 665 648 166.7
B 7 0 186238 1222.53 712 686 151.8
B 10 247 80567 526.3 712 686 151.8
B 8 128 67610 440.94 712 686 151.8
C 9 38 1875752 10042.65 666 658 186.7
C 15 231 890145 4763.92 666 658 186.7
C 12 247 570804 3053.59 666 658 186.7
D 1 47 1838497 11148.13 579 556 164.9
D 2 216 1338850 8117.5 579 556 164.9
D 15 174 1318923 7996.63 579 556 164.9

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