ASTROSAT CZTI

Data Quality Report

Orbit 26566

Creation date: 2024-06-27T19:30:33.398868
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/AS1T03_220T01_9000003842_26566cztM0_level2.evt modeM0/AS1T03_220T01_9000003842_26566cztM0_level2_quad_clean.evt
Size (bytes)237,130,56029,056,320
Size226.1 MB 27.7 MB
Events in quadrant A961,495212,626
Events in quadrant B1,415,037204,412
Events in quadrant C1,241,136205,781
Events in quadrant D3,439,138123,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039650
B054080
C048850
D0114600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180760.332042%
B180720411.289430%
C18071357.470946%
D1807118665.633647%

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 1807 1807 1 1 0.06% 0.06%
B 1807 1807 144 144 7.97% 7.97%
C 1807 1807 51 51 2.82% 2.82%
D 1807 1807 1066 1066 58.99% 58.99%

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 13 46200 976.8 222 217 47.1
A 5 168 34546 729.23 222 217 47.1
A 6 16 20470 430.22 222 217 47.1
B 5 172 541813 12530.77 216 210 43.2
B 3 112 18892 432.24 216 210 43.2
B 12 111 4818 106.61 216 210 43.2
C 4 254 327888 6274.61 216 217 52.2
C 14 238 33536 638.03 216 217 52.2
C 3 233 27849 529.13 216 217 52.2
D 7 80 1753318 49759.31 134 130 35.2
D 1 52 1017370 28871.5 134 130 35.2
D 12 233 88842 2517.84 134 130 35.2

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