ASTROSAT CZTI

Data Quality Report

Orbit 28245

Creation date: 2024-06-27T19:49:36.602083
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_067T01_9000004076_28245cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28245cztM0_level2_quad_clean.evt
Size (bytes)605,969,28089,089,920
Size577.9 MB 85.0 MB
Events in quadrant A3,764,285557,445
Events in quadrant B3,747,314562,472
Events in quadrant C3,704,396535,401
Events in quadrant D6,624,887518,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160220
B0158570
C0157210
D0246510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75492303.046761%
B75492433.218969%
C75492623.470658%
D755092212.211921%

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 7639 7549 1 1 0.01% 0.01%
B 7639 7552 2 2 0.03% 0.03%
C 7639 7550 0 0 0.00% 0.00%
D 7640 7551 645 645 8.44% 8.54%

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 15 192 75548 391.04 937 915 190.9
A 1 113 46536 239.03 937 915 190.9
A 12 96 22643 113.84 937 915 190.9
B 10 245 60964 332.04 924 900 180.9
B 0 230 24928 132.83 924 900 180.9
B 12 111 23082 122.62 924 900 180.9
C 14 238 140986 661.19 895 901 211.9
C 3 233 64671 300.99 895 901 211.9
C 13 61 6178 24.9 895 901 211.9
D 1 52 2136438 10019.7 878 851 213.1
D 5 222 341168 1596.69 878 851 213.1
D 12 250 298300 1395.56 878 851 213.1

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