ASTROSAT CZTI

Data Quality Report

Orbit 30461

Creation date: 2024-06-27T20:15:34.091853
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/AS1A10_121T02_9000004378_30461cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30461cztM0_level2_quad_clean.evt
Size (bytes)613,828,800106,079,040
Size585.4 MB 101.2 MB
Events in quadrant A3,545,867682,628
Events in quadrant B5,756,959681,964
Events in quadrant C3,836,736668,035
Events in quadrant D4,944,185659,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156541
B0227272
C0163011
D0201831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7472720.963597%
B74711742.329005%
C74721852.475910%
D74723724.978587%

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 7792 7474 9 9 0.12% 0.12%
B 7791 7473 5 5 0.06% 0.07%
C 7792 7474 6 6 0.08% 0.08%
D 7792 7474 136 136 1.75% 1.82%

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 59896 322.14 900 881 183.2
A 8 192 13433 68.52 900 881 183.2
A 13 254 13284 67.7 900 881 183.2
B 6 159 2155834 12462.91 893 868 172.9
B 0 229 33133 186.6 893 868 172.9
B 12 111 21697 120.46 893 868 172.9
C 14 238 152215 730.82 869 872 207.1
C 10 22 117262 562.03 869 872 207.1
C 3 233 109803 526.01 869 872 207.1
D 13 104 1448851 6457.25 859 841 224.2
D 8 195 141759 628.41 859 841 224.2
D 2 234 35856 156.15 859 841 224.2

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