ASTROSAT CZTI

Data Quality Report

Orbit 04882

Creation date: 2024-06-27T14:48:24.360534
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/AS1G05_237T01_9000000620_04882cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04882cztM0_level2_quad_clean.evt
Size (bytes)566,199,36087,488,640
Size540.0 MB 83.4 MB
Events in quadrant A3,745,706538,758
Events in quadrant B4,360,529540,264
Events in quadrant C3,455,354535,930
Events in quadrant D5,074,405510,021

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161331
B0180880
C0154740
D0203130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7546881.166181%
B75461301.722767%
C7546390.516830%
D75465527.315134%

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 7751 7548 23 23 0.30% 0.30%
B 7751 7548 13 13 0.17% 0.17%
C 7751 7548 0 0 0.00% 0.00%
D 7751 7546 415 415 5.35% 5.50%

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 3 1 76530 404.29 908 888 187.1
A 15 234 48844 256.31 908 888 187.1
A 8 15 44603 233.65 908 888 187.1
B 4 80 264322 1501.42 918 898 175.4
B 15 204 243047 1380.16 918 898 175.4
B 5 6 77616 437.26 918 898 175.4
C 13 61 7225 30.71 882 888 206.4
C 12 4 6022 24.88 882 888 206.4
C 1 16 3327 11.82 882 888 206.4
D 1 52 1027493 4843.34 849 823 212.0
D 2 136 247405 1163.26 849 823 212.0
D 13 235 230905 1085.42 849 823 212.0

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