ASTROSAT CZTI

Data Quality Report

Orbit 12395

Creation date: 2024-06-27T16:26:39.403151
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_104T02_9000001838_12395cztM0_level2.evt modeM0/AS1A04_104T02_9000001838_12395cztM0_level2_quad_clean.evt
Size (bytes)653,100,480122,330,880
Size622.8 MB 116.7 MB
Events in quadrant A5,524,079814,423
Events in quadrant B4,218,224832,150
Events in quadrant C3,038,520823,431
Events in quadrant D6,524,463746,558

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212622
B0170911
C0141461
D0242051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70035067.225475%
B70033875.526203%
C7003490.699700%
D700381911.694988%

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 7299 7005 259 259 3.55% 3.70%
B 7299 7004 211 211 2.89% 3.01%
C 7299 7005 0 0 0.00% 0.00%
D 7299 7004 741 741 10.15% 10.58%

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 1462226 9145.13 788 772 159.8
A 1 162 306311 1911.92 788 772 159.8
A 1 178 176570 1100.06 788 772 159.8
B 4 239 499726 3332.9 791 771 149.7
B 3 64 429010 2860.53 791 771 149.7
B 0 219 60881 401.52 791 771 149.7
C 8 112 5883 28.37 776 778 179.9
C 13 61 5728 27.51 776 778 179.9
C 8 128 3166 13.27 776 778 179.9
D 1 52 2217459 12355.4 745 723 179.4
D 10 199 766535 4268.4 745 723 179.4
D 10 157 367627 2045.01 745 723 179.4

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