ASTROSAT CZTI

Data Quality Report

Orbit 12149

Creation date: 2024-06-27T16:23:04.877894
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/AS1G08_065T01_9000001796_12149cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12149cztM0_level2_quad_clean.evt
Size (bytes)663,995,520116,688,960
Size633.2 MB 111.3 MB
Events in quadrant A4,207,249764,783
Events in quadrant B5,529,700746,471
Events in quadrant C3,829,788755,190
Events in quadrant D5,988,412699,050

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182103
B0221472
C0172322
D0236682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81712012.459919%
B81716537.991678%
C8171911.113695%
D81717128.713744%

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 8422 8174 38 38 0.45% 0.46%
B 8422 8174 232 232 2.75% 2.84%
C 8422 8174 1 1 0.01% 0.01%
D 8422 8174 457 457 5.43% 5.59%

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 13 248 145581 699.0 998 974 206.9
A 8 15 65068 309.82 998 974 206.9
A 1 162 61555 292.83 998 974 206.9
B 4 239 751839 3983.58 980 954 188.5
B 3 64 655897 3474.59 980 954 188.5
B 11 51 95397 501.04 980 954 188.5
C 13 61 7375 27.98 978 981 228.6
C 14 234 5483 19.7 978 981 228.6
C 8 128 4238 14.25 978 981 228.6
D 10 157 1261907 5513.89 942 915 228.7
D 8 195 440457 1921.97 942 915 228.7
D 1 52 411811 1796.71 942 915 228.7

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