ASTROSAT CZTI

Data Quality Report

Orbit 27446

Creation date: 2024-06-27T19:40:09.891210
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/AS1T03_249T01_9000003934_27446cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27446cztM0_level2_quad_clean.evt
Size (bytes)423,063,36087,192,000
Size403.5 MB 83.2 MB
Events in quadrant A3,079,462564,617
Events in quadrant B3,117,636568,535
Events in quadrant C3,107,186542,830
Events in quadrant D3,092,149537,239

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126180
B0127610
C0127170
D0130220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6121691.127267%
B6122600.980072%
C6122871.421104%
D6122470.767723%

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 7221 6121 0 0 0.00% 0.00%
B 7222 6123 1 1 0.01% 0.02%
C 7222 6123 3 3 0.04% 0.05%
D 7222 6123 11 11 0.15% 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 13 254 10192 58.98 798 783 159.5
A 3 137 7279 40.72 798 783 159.5
A 0 226 6932 38.54 798 783 159.5
B 0 189 30791 202.53 782 762 148.3
B 12 111 18003 116.28 782 762 148.3
B 11 111 16484 106.04 782 762 148.3
C 14 238 122778 693.27 757 761 176.0
C 10 22 29475 163.15 757 761 176.0
C 4 224 6759 34.08 757 761 176.0
D 2 250 132597 726.56 771 753 181.5
D 1 52 31228 167.94 771 753 181.5
D 2 234 24287 129.69 771 753 181.5

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