ASTROSAT CZTI

Data Quality Report

Orbit 41381

Creation date: 2024-06-27T22:28:22.738085
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/AS1A12_035T01_9000005660_41381cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41381cztM0_level2_quad_clean.evt
Size (bytes)666,336,960173,266,560
Size635.5 MB 165.2 MB
Events in quadrant A5,738,3001,164,641
Events in quadrant B5,395,0841,166,681
Events in quadrant C5,822,3731,105,996
Events in quadrant D6,864,9281,053,999

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233454
B0236243
C0241723
D0276873

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10893340.312127%
B10893990.908841%
C108933232.965207%
D108932111.937024%

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 14953 10896 13 13 0.09% 0.12%
B 14953 10896 56 56 0.37% 0.51%
C 14953 10896 320 320 2.14% 2.94%
D 14953 10896 179 179 1.20% 1.64%

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 10 83 995335 4048.2 1195 1167 245.6
A 13 248 78211 313.72 1195 1167 245.6
A 12 189 30868 120.94 1195 1167 245.6
B 0 186 390086 1707.51 1181 1145 227.8
B 0 229 160455 699.39 1181 1145 227.8
B 5 255 75794 327.72 1181 1145 227.8
C 0 10 855776 3192.83 1148 1153 267.7
C 15 214 454147 1692.37 1148 1153 267.7
C 2 16 20941 73.93 1148 1153 267.7
D 5 222 684798 2402.77 1163 1130 284.5
D 13 249 482651 1692.32 1163 1130 284.5
D 1 52 397510 1393.09 1163 1130 284.5

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