ASTROSAT CZTI

Data Quality Report

Orbit 26737

Creation date: 2024-06-27T19:32:17.012288
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_223T01_9000003850_26737cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26737cztM0_level2_quad_clean.evt
Size (bytes)567,374,40080,118,720
Size541.1 MB 76.4 MB
Events in quadrant A3,518,920498,043
Events in quadrant B3,710,467504,514
Events in quadrant C3,555,092486,725
Events in quadrant D5,934,351459,615

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143530
B0149120
C0144110
D0219750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68481301.898364%
B68481912.789136%
C68481602.336449%
D684878111.404790%

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 7838 6849 0 0 0.00% 0.00%
B 7838 6849 35 35 0.45% 0.51%
C 7838 6849 4 4 0.05% 0.06%
D 7838 6849 560 560 7.14% 8.18%

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 9698 48.57 911 893 181.3
A 3 137 8279 40.74 911 893 181.3
A 0 226 7756 37.86 911 893 181.3
B 0 189 86745 510.67 893 873 168.2
B 10 246 74612 438.51 893 873 168.2
B 3 112 47740 278.71 893 873 168.2
C 14 238 139433 689.9 863 868 200.8
C 15 208 25571 122.99 863 868 200.8
C 3 233 22333 106.87 863 868 200.8
D 1 52 2512573 11453.01 837 818 219.3
D 12 233 126687 573.93 837 818 219.3
D 13 168 41221 184.23 837 818 219.3

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