ASTROSAT CZTI

Data Quality Report

Orbit 30903

Creation date: 2024-06-27T20:20:59.008553
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/AS1C06_004T01_9000004466_30903cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30903cztM0_level2_quad_clean.evt
Size (bytes)570,893,760119,468,160
Size544.4 MB 113.9 MB
Events in quadrant A3,345,541810,966
Events in quadrant B5,519,622816,690
Events in quadrant C3,921,565769,452
Events in quadrant D4,073,219778,793

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140812
B0209612
C0159302
D0162352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6342961.513718%
B63432073.263440%
C634385313.447895%
D63431712.695885%

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 8897 6342 2 2 0.02% 0.03%
B 8898 6343 9 9 0.10% 0.14%
C 8898 6343 25 25 0.28% 0.39%
D 8898 6343 56 56 0.63% 0.88%

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 0 13 25611 146.48 858 844 169.1
A 13 254 12040 66.22 858 844 169.1
A 3 137 7888 41.66 858 844 169.1
B 6 159 1907468 12073.64 856 836 157.9
B 0 190 136287 857.74 856 836 157.9
B 6 36 46722 290.57 856 836 157.9
C 14 238 298660 1615.51 796 802 184.4
C 14 254 237773 1285.27 796 802 184.4
C 3 233 102507 551.62 796 802 184.4
D 8 195 490207 2522.83 835 818 194.0
D 1 52 175562 900.82 835 818 194.0
D 2 250 55760 283.23 835 818 194.0

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