ASTROSAT CZTI

Data Quality Report

Orbit 05822

Creation date: 2024-06-27T14:59:31.526440
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/AS1A02_197T02_9000000752_05822cztM0_level2.evt modeM0/AS1A02_197T02_9000000752_05822cztM0_level2_quad_clean.evt
Size (bytes)503,951,04079,223,040
Size480.6 MB 75.6 MB
Events in quadrant A3,688,943468,144
Events in quadrant B3,800,300473,745
Events in quadrant C3,572,640463,408
Events in quadrant D3,664,259445,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165633
B0165332
C0163052
D0166692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78923184.029397%
B78923184.029397%
C78922202.787633%
D78922453.104410%

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 7977 7894 2 2 0.03% 0.03%
B 7977 7894 5 5 0.06% 0.06%
C 7977 7894 0 0 0.00% 0.00%
D 7977 7894 6 6 0.08% 0.08%

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 15 236 43695 222.29 932 909 192.5
A 4 2 38389 194.72 932 909 192.5
A 12 194 9036 42.22 932 909 192.5
B 15 204 109335 596.55 944 917 181.7
B 4 81 35728 191.54 944 917 181.7
B 12 111 17987 93.92 944 917 181.7
C 14 67 12504 55.1 910 912 210.4
C 9 16 7593 31.76 910 912 210.4
C 13 61 7516 31.39 910 912 210.4
D 1 239 106021 476.29 905 875 220.8
D 2 63 37640 166.54 905 875 220.8
D 8 195 35699 157.74 905 875 220.8

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