ASTROSAT CZTI

Data Quality Report

Orbit 19511

Creation date: 2024-06-27T18:03:39.480306
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/AS1A05_175T01_9000002894_19511cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19511cztM0_level2_quad_clean.evt
Size (bytes)466,600,32072,207,360
Size445.0 MB 68.9 MB
Events in quadrant A3,439,072448,055
Events in quadrant B3,434,279452,603
Events in quadrant C3,440,072423,553
Events in quadrant D3,387,148419,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139073
B0138532
C0138912
D0138932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63411011.592809%
B63411011.592809%
C63411131.782053%
D6341811.277401%

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 7641 6342 5 5 0.07% 0.08%
B 7641 6343 0 0 0.00% 0.00%
C 7641 6343 0 0 0.00% 0.00%
D 7641 6342 19 19 0.25% 0.30%

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 4 2 42959 240.47 882 868 175.0
A 0 226 7634 38.65 882 868 175.0
A 13 254 6613 32.82 882 868 175.0
B 12 111 19342 112.92 872 853 163.7
B 11 111 17059 98.98 872 853 163.7
B 14 111 15643 90.33 872 853 163.7
C 14 238 131112 689.8 823 830 188.9
C 9 221 63808 333.45 823 830 188.9
C 3 233 30950 159.48 823 830 188.9
D 5 222 115113 562.93 844 823 203.0
D 12 218 62553 304.05 844 823 203.0
D 1 52 30363 145.5 844 823 203.0

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