ASTROSAT CZTI

Data Quality Report

Orbit 11101

Creation date: 2024-06-27T16:08:17.879004
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_071T02_9000001620_11101cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11101cztM0_level2_quad_clean.evt
Size (bytes)578,105,28073,224,000
Size551.3 MB 69.8 MB
Events in quadrant A3,312,584457,427
Events in quadrant B3,476,012469,255
Events in quadrant C3,188,618453,269
Events in quadrant D7,099,958393,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137323
B0142022
C0134352
D0255482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A636580.125687%
B6365370.581304%
C6365610.958366%
D636595214.956795%

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 7710 6366 0 0 0.00% 0.00%
B 7710 6366 11 11 0.14% 0.17%
C 7710 6366 40 40 0.52% 0.63%
D 7710 6366 796 796 10.32% 12.50%

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 8 15 183318 1124.83 805 790 162.3
A 11 29 28632 171.58 805 790 162.3
A 0 226 7478 41.21 805 790 162.3
B 4 239 188516 1227.6 816 799 152.9
B 10 16 26637 168.97 816 799 152.9
B 0 187 25188 159.5 816 799 152.9
C 9 54 150044 822.7 779 786 181.4
C 13 61 5782 27.54 779 786 181.4
C 5 207 2215 7.88 779 786 181.4
D 10 253 2124248 12436.44 710 692 170.8
D 1 52 1971912 11544.3 710 692 170.8
D 13 152 82723 480.41 710 692 170.8

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