ASTROSAT CZTI

Data Quality Report

Orbit 13741

Creation date: 2024-06-27T16:45:26.980506
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_062T01_9000002038_13741cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13741cztM0_level2_quad_clean.evt
Size (bytes)544,991,040101,885,760
Size519.7 MB 97.2 MB
Events in quadrant A3,780,162633,243
Events in quadrant B4,075,680628,538
Events in quadrant C3,745,714659,109
Events in quadrant D4,381,861630,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160721
B0167980
C0159910
D0178960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76803164.114583%
B76803514.570312%
C76802803.645833%
D76802933.815104%

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 7681 7681 1 1 0.01% 0.01%
B 7681 7681 18 18 0.23% 0.23%
C 7681 7681 0 0 0.00% 0.00%
D 7681 7681 14 14 0.18% 0.18%

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 69 29436 144.34 960 940 197.4
A 15 157 24759 120.65 960 940 197.4
A 1 162 21834 105.83 960 940 197.4
B 3 64 76429 410.38 948 923 184.0
B 4 173 69821 374.46 948 923 184.0
B 10 252 50854 271.38 948 923 184.0
C 3 233 92957 422.66 935 940 217.7
C 13 61 6826 27.04 935 940 217.7
C 0 207 3850 13.37 935 940 217.7
D 5 222 477505 2087.61 937 909 228.3
D 10 157 119050 517.49 937 909 228.3
D 8 195 99109 430.14 937 909 228.3

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