ASTROSAT CZTI

Data Quality Report

Orbit 25227

Creation date: 2024-06-27T19:15:15.465627
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/AS1A07_097T01_9000003692_25227cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25227cztM0_level2_quad_clean.evt
Size (bytes)492,284,16076,271,040
Size469.5 MB 72.7 MB
Events in quadrant A3,239,720479,825
Events in quadrant B3,327,046486,785
Events in quadrant C3,477,005456,539
Events in quadrant D4,447,221456,122

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132200
B0134910
C0141020
D0174070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6161550.892712%
B6161661.071255%
C6160831.347403%
D61611582.564519%

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 7346 6162 0 0 0.00% 0.00%
B 7346 6162 5 5 0.07% 0.08%
C 7345 6161 0 0 0.00% 0.00%
D 7346 6162 85 85 1.16% 1.38%

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 6 14 21389 122.86 835 822 167.4
A 13 254 9553 52.15 835 822 167.4
A 0 226 7251 38.4 835 822 167.4
B 0 190 32550 206.66 816 798 153.6
B 15 33 31660 200.86 816 798 153.6
B 3 64 31183 197.76 816 798 153.6
C 7 247 289552 1592.06 783 791 181.4
C 14 238 125964 690.13 783 791 181.4
C 14 67 6830 33.3 783 791 181.4
D 1 52 422764 2001.05 798 781 210.9
D 10 70 404246 1913.23 798 781 210.9
D 8 195 292868 1385.08 798 781 210.9

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