ASTROSAT CZTI

Data Quality Report

Orbit 22020

Creation date: 2024-06-27T18:35:25.723489
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/AS1A07_059T05_9000003252_22020cztM0_level2.evt modeM0/AS1A07_059T05_9000003252_22020cztM0_level2_quad_clean.evt
Size (bytes)589,616,640107,913,600
Size562.3 MB 102.9 MB
Events in quadrant A3,585,624714,904
Events in quadrant B3,750,843726,166
Events in quadrant C3,625,274691,746
Events in quadrant D6,384,934612,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155952
B0159382
C0155852
D0242092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7516500.665247%
B7516901.197445%
C75161091.450239%
D7516104313.877062%

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 7756 7517 0 0 0.00% 0.00%
B 7756 7516 7 7 0.09% 0.09%
C 7756 7517 0 0 0.00% 0.00%
D 7755 7516 893 893 11.52% 11.88%

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 13132 65.62 926 906 186.3
A 0 226 8012 38.14 926 906 186.3
A 3 137 7708 36.51 926 906 186.3
B 3 64 55051 305.9 924 898 177.0
B 0 190 31544 173.11 924 898 177.0
B 12 111 20656 111.61 924 898 177.0
C 14 238 137882 650.91 892 896 210.5
C 13 61 6351 25.92 892 896 210.5
C 0 10 5250 20.69 892 896 210.5
D 1 52 1686599 8145.78 847 820 207.0
D 5 222 962826 4648.47 847 820 207.0
D 11 176 308175 1485.16 847 820 207.0

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