ASTROSAT CZTI

Data Quality Report

Orbit 24712

Creation date: 2024-06-27T19:09:03.621234
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/AS1T03_194T01_9000003620_24712cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24712cztM0_level2_quad_clean.evt
Size (bytes)550,100,16099,267,840
Size524.6 MB 94.7 MB
Events in quadrant A3,443,785647,449
Events in quadrant B3,712,990646,922
Events in quadrant C5,295,341609,014
Events in quadrant D3,727,737609,982

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147281
B0155681
C0210802
D0157171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70761151.625212%
B70771371.935849%
C70762243.165630%
D70761291.823064%

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 7481 7076 0 0 0.00% 0.00%
B 7482 7077 2 2 0.03% 0.03%
C 7481 7076 3 3 0.04% 0.04%
D 7481 7076 4 4 0.05% 0.06%

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 13 254 11369 57.88 892 872 181.4
A 3 137 8374 41.36 892 872 181.4
A 0 226 7594 37.06 892 872 181.4
B 0 230 219825 1277.57 878 857 171.4
B 4 80 22283 125.01 878 857 171.4
B 12 111 21191 118.64 878 857 171.4
C 7 247 1697611 8456.92 849 856 200.6
C 14 238 132596 656.62 849 856 200.6
C 2 16 81546 402.17 849 856 200.6
D 1 52 176632 826.63 870 845 212.7
D 8 195 171451 802.27 870 845 212.7
D 7 238 69444 322.58 870 845 212.7

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