ASTROSAT CZTI

Data Quality Report

Orbit 14509

Creation date: 2024-06-27T16:56:12.573177
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_14509cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14509cztM0_level2_quad_clean.evt
Size (bytes)425,819,52072,443,520
Size406.1 MB 69.1 MB
Events in quadrant A2,764,710460,032
Events in quadrant B2,870,660470,661
Events in quadrant C2,805,392467,496
Events in quadrant D4,048,120377,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014018
B014014
C014117
D014022

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140881903
B0142441856
C0140891880
D0200853930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5983340.568277%
B6023520.863357%
C6004250.416389%
D588475712.865398%

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 7393 6183 2 2 0.03% 0.03%
B 7394 6223 1 1 0.01% 0.02%
C 7394 6201 0 0 0.00% 0.00%
D 7393 6065 348 348 4.71% 5.74%

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 12 189 48937 337.43 696 680 143.0
A 8 15 14366 95.7 696 680 143.0
A 0 23 13236 87.8 696 680 143.0
B 0 189 42179 307.07 698 681 135.1
B 0 219 36268 263.33 698 681 135.1
B 0 197 17029 120.97 698 681 135.1
C 3 233 134792 840.69 681 685 159.5
C 0 207 12499 74.06 681 685 159.5
C 13 61 4772 25.62 681 685 159.5
D 10 199 1597238 9884.53 609 595 161.5
D 12 110 59599 365.28 609 595 161.5
D 2 120 23421 141.31 609 595 161.5

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