ASTROSAT CZTI

Data Quality Report

Orbit 28715

Creation date: 2024-06-27T19:55:16.977525
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_123T03_9000004120_28715cztM0_level2.evt modeM0/AS1A10_123T03_9000004120_28715cztM0_level2_quad_clean.evt
Size (bytes)2,074,204,800373,703,040
Size1.9 GB 356.4 MB
Events in quadrant A13,507,1062,380,699
Events in quadrant B13,604,4332,426,607
Events in quadrant C14,679,3762,314,018
Events in quadrant D19,113,8172,249,786

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0589345
B0591165
C0617175
D0763885

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05780
B05780
C05780
D05780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283301910.674197%
B283312090.737708%
C283315792.043698%
D2833115665.527514%

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 32245 28331 60 60 0.19% 0.21%
B 32246 28331 7 7 0.02% 0.02%
C 32246 28332 0 0 0.00% 0.00%
D 32246 28333 1264 1264 3.92% 4.46%

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 15 174 287503 416.96 3405 3335 681.5
A 14 239 81453 114.62 3405 3335 681.5
A 13 254 50246 68.83 3405 3335 681.5
B 0 190 84229 126.3 3387 3300 640.7
B 12 111 80326 120.21 3387 3300 640.7
B 11 111 72630 108.2 3387 3300 640.7
C 3 233 1216073 1605.21 3250 3272 755.5
C 14 238 621633 818.44 3250 3272 755.5
C 14 254 144220 186.55 3250 3272 755.5
D 1 52 4082553 5301.72 3222 3135 769.5
D 8 195 1381005 1790.72 3222 3135 769.5
D 7 80 644781 833.9 3222 3135 769.5

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