ASTROSAT CZTI

Data Quality Report

Orbit 17337

Creation date: 2024-06-27T17:35:08.682475
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/AS1A05_169T01_9000002558_17337cztM0_level2.evt modeM0/AS1A05_169T01_9000002558_17337cztM0_level2_quad_clean.evt
Size (bytes)434,819,52064,558,080
Size414.7 MB 61.6 MB
Events in quadrant A3,151,983385,117
Events in quadrant B3,212,519384,684
Events in quadrant C3,232,029367,421
Events in quadrant D3,135,882369,824

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135672
B0136772
C0138442
D0137092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6416711.106608%
B6416811.262469%
C64161121.745636%
D6416711.106608%

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 7526 6416 0 0 0.00% 0.00%
B 7526 6417 1 1 0.01% 0.02%
C 7526 6417 0 0 0.00% 0.00%
D 7526 6417 11 11 0.15% 0.17%

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 0 226 7112 38.51 820 803 163.8
A 3 137 6027 31.89 820 803 163.8
A 12 194 5711 29.96 820 803 163.8
B 12 111 19030 117.05 818 797 155.8
B 11 111 16548 101.12 818 797 155.8
B 14 111 15281 92.99 818 797 155.8
C 14 238 124677 666.8 792 796 185.8
C 3 233 21869 113.43 792 796 185.8
C 13 61 5549 25.58 792 796 185.8
D 2 152 54223 274.31 800 776 194.8
D 2 234 21435 106.03 800 776 194.8
D 5 222 20380 100.62 800 776 194.8

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