ASTROSAT CZTI

Data Quality Report

Orbit 18638

Creation date: 2024-06-27T17:52:49.400683
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/AS1C04_001T01_9000002784_18638cztM0_level2.evt modeM0/AS1C04_001T01_9000002784_18638cztM0_level2_quad_clean.evt
Size (bytes)499,590,720108,838,080
Size476.4 MB 103.8 MB
Events in quadrant A2,901,763725,648
Events in quadrant B5,242,132712,890
Events in quadrant C2,912,354720,651
Events in quadrant D3,651,780702,881

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127031
B0197481
C0126251
D0149351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6220540.868167%
B62215158.278412%
C6221530.851953%
D62211412.266517%

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 7190 6220 2 2 0.03% 0.03%
B 7191 6221 343 343 4.77% 5.51%
C 7191 6222 1 1 0.01% 0.02%
D 7191 6221 96 96 1.34% 1.54%

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 6 16 16424 104.49 741 727 150.2
A 9 143 16328 103.85 741 727 150.2
A 13 254 9210 56.47 741 727 150.2
B 10 245 2329499 16879.14 723 705 138.0
B 0 197 29494 208.66 723 705 138.0
B 12 111 16757 116.35 723 705 138.0
C 14 238 111542 665.55 711 715 166.5
C 3 233 15577 89.25 711 715 166.5
C 9 54 13896 79.16 711 715 166.5
D 1 52 442431 2533.32 717 697 174.4
D 7 238 388824 2225.89 717 697 174.4
D 10 70 44551 251.5 717 697 174.4

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