ASTROSAT CZTI

Data Quality Report

Orbit 27707

Creation date: 2024-06-27T19:43:22.515794
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_262T01_9000003988_27707cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27707cztM0_level2_quad_clean.evt
Size (bytes)456,353,28098,219,520
Size435.2 MB 93.7 MB
Events in quadrant A3,159,631639,355
Events in quadrant B3,529,786648,664
Events in quadrant C3,350,699624,043
Events in quadrant D3,333,028603,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136100
B0146770
C0139680
D0144880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6586280.425144%
B6586921.396903%
C6586791.199514%
D6586450.683268%

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 7651 6586 3 3 0.04% 0.05%
B 7651 6587 5 5 0.07% 0.08%
C 7651 6586 0 0 0.00% 0.00%
D 7651 6587 27 27 0.35% 0.41%

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 11168 64.08 815 799 161.8
A 8 192 8394 46.94 815 799 161.8
A 3 137 7668 42.45 815 799 161.8
B 3 112 220100 1422.59 816 793 154.2
B 0 230 57395 367.16 816 793 154.2
B 0 190 27894 175.8 816 793 154.2
C 14 238 126630 682.45 793 800 184.4
C 3 233 106329 572.35 793 800 184.4
C 15 208 23287 121.96 793 800 184.4
D 1 52 142650 770.28 786 768 184.2
D 11 176 114622 618.12 786 768 184.2
D 2 250 62515 335.23 786 768 184.2

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