ASTROSAT CZTI

Data Quality Report

Orbit 23518

Creation date: 2024-06-27T18:55:35.451304
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/AS1A07_112T02_9000003480_23518cztM0_level2.evt modeM0/AS1A07_112T02_9000003480_23518cztM0_level2_quad_clean.evt
Size (bytes)731,640,960157,803,840
Size697.7 MB 150.5 MB
Events in quadrant A5,106,0791,006,997
Events in quadrant B5,391,5651,031,870
Events in quadrant C5,394,485993,669
Events in quadrant D5,504,777970,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02292158
B02362856
C02348752
D02450754

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11217340.303111%
B11218620.552683%
C112201040.926916%
D112201241.105169%

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 13315 11220 0 0 0.00% 0.00%
B 13315 11221 8 8 0.06% 0.07%
C 13315 11225 11 11 0.08% 0.10%
D 13316 11225 87 87 0.65% 0.78%

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 13 254 17145 60.11 1322 1296 263.7
A 3 137 11569 38.96 1322 1296 263.7
A 0 226 11163 37.42 1322 1296 263.7
B 0 189 149603 595.29 1321 1289 249.1
B 12 111 30089 115.6 1321 1289 249.1
B 11 111 26790 102.35 1321 1289 249.1
C 14 238 202758 685.89 1269 1278 293.7
C 7 247 148261 500.37 1269 1278 293.7
C 10 91 50328 166.98 1269 1278 293.7
D 1 52 576126 1859.24 1274 1235 309.2
D 2 234 46499 146.39 1274 1235 309.2
D 5 222 33799 105.31 1274 1235 309.2

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