ASTROSAT CZTI

Data Quality Report

Orbit 12428

Creation date: 2024-06-27T16:27:11.972284
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/AS1A04_141T01_9000001848_12428cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12428cztM0_level2_quad_clean.evt
Size (bytes)580,504,32087,246,720
Size553.6 MB 83.2 MB
Events in quadrant A4,771,937553,759
Events in quadrant B3,796,580555,433
Events in quadrant C2,923,975559,800
Events in quadrant D5,641,006512,260

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187183
B0156142
C0133902
D0213062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66042483.755300%
B66042233.376741%
C660490.136281%
D66043024.572986%

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 7600 6605 167 167 2.20% 2.53%
B 7600 6605 160 160 2.11% 2.42%
C 7600 6606 0 0 0.00% 0.00%
D 7600 6605 398 398 5.24% 6.03%

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 13 251 1476543 9421.74 766 750 156.6
A 1 162 104194 660.41 766 750 156.6
A 12 189 52768 332.09 766 750 156.6
B 4 239 567523 3862.25 767 748 146.7
B 3 64 125735 851.72 767 748 146.7
B 0 187 44438 297.72 767 748 146.7
C 13 61 5531 27.37 748 752 174.6
C 12 4 2932 12.49 748 752 174.6
C 14 234 2320 8.98 748 752 174.6
D 1 52 2648867 14910.49 730 708 177.6
D 14 34 65031 362.17 730 708 177.6
D 8 195 48544 269.34 730 708 177.6

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