ASTROSAT CZTI

Data Quality Report

Orbit 30309

Creation date: 2024-06-27T20:13:30.108933
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_071T20_9000004354_30309cztM0_level2.evt modeM0/AS1A10_071T20_9000004354_30309cztM0_level2_quad_clean.evt
Size (bytes)554,109,120101,249,280
Size528.4 MB 96.6 MB
Events in quadrant A3,285,072672,435
Events in quadrant B5,239,035678,754
Events in quadrant C3,769,130652,180
Events in quadrant D4,063,567625,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138192
B0200022
C0154552
D0164822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6276871.386233%
B62761832.915870%
C62761682.676864%
D62761272.023582%

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 7501 6276 3 3 0.04% 0.05%
B 7501 6276 11 11 0.15% 0.18%
C 7501 6276 3 3 0.04% 0.05%
D 7501 6276 62 62 0.83% 0.99%

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 8 192 26937 154.89 844 828 168.6
A 13 254 11930 65.86 844 828 168.6
A 3 137 8224 43.87 844 828 168.6
B 6 159 1680424 10722.68 831 812 156.6
B 6 36 298193 1898.49 831 812 156.6
B 12 111 18571 113.37 831 812 156.6
C 3 233 434673 2282.51 814 820 190.1
C 14 238 131867 689.44 814 820 190.1
C 2 114 15203 75.67 814 820 190.1
D 8 195 482063 2224.15 813 799 216.4
D 13 249 166636 766.41 813 799 216.4
D 1 52 106651 489.19 813 799 216.4

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