ASTROSAT CZTI

Data Quality Report

Orbit 13402

Creation date: 2024-06-27T16:40:16.285005
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_103T01_9000001988_13402cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13402cztM0_level2_quad_clean.evt
Size (bytes)453,764,16081,768,960
Size432.7 MB 78.0 MB
Events in quadrant A3,225,935515,752
Events in quadrant B3,448,846526,556
Events in quadrant C3,331,546507,247
Events in quadrant D3,309,336488,165

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136262
B0142791
C0139191
D0141341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6272881.403061%
B62721011.610332%
C6272781.243622%
D6272791.259566%

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 7543 6273 0 0 0.00% 0.00%
B 7542 6272 6 6 0.08% 0.10%
C 7543 6273 12 12 0.16% 0.19%
D 7543 6273 17 17 0.23% 0.27%

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 7445 39.44 838 822 167.9
A 12 194 6316 32.72 838 822 167.9
A 3 137 4806 23.73 838 822 167.9
B 3 64 86248 549.02 839 822 155.6
B 0 214 33341 208.99 839 822 155.6
B 0 230 21980 135.98 839 822 155.6
C 14 220 128023 693.81 804 810 183.4
C 3 233 64965 349.9 804 810 183.4
C 13 61 5810 27.27 804 810 183.4
D 1 52 133342 705.45 798 778 187.9
D 8 195 126377 668.38 798 778 187.9
D 2 234 21173 108.53 798 778 187.9

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