ASTROSAT CZTI

Data Quality Report

Orbit 14519

Creation date: 2024-06-27T16:56:19.885968
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/AS1G08_066T01_9000002138_14519cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14519cztM0_level2_quad_clean.evt
Size (bytes)470,640,960103,717,440
Size448.8 MB 98.9 MB
Events in quadrant A3,209,263683,004
Events in quadrant B3,322,902697,305
Events in quadrant C3,285,079690,819
Events in quadrant D4,008,536630,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134323
B0138472
C0134582
D0159272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6294340.540197%
B6294600.953289%
C6294280.444868%
D62944587.276772%

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 7530 6296 0 0 0.00% 0.00%
B 7530 6296 3 3 0.04% 0.05%
C 7530 6296 0 0 0.00% 0.00%
D 7530 6296 240 240 3.19% 3.81%

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 15 125363 770.96 794 776 161.6
A 12 189 12246 70.98 794 776 161.6
A 0 23 10372 59.38 794 776 161.6
B 0 189 76055 501.28 798 777 150.2
B 0 219 66481 437.53 798 777 150.2
B 0 229 18655 119.05 798 777 150.2
C 3 233 198457 1092.59 790 796 180.9
C 0 207 6403 30.99 790 796 180.9
C 13 61 5567 26.37 790 796 180.9
D 10 199 1005067 5620.29 752 735 178.7
D 10 70 69532 384.99 752 735 178.7
D 2 120 60310 333.38 752 735 178.7

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