ASTROSAT CZTI

Data Quality Report

Orbit 17102

Creation date: 2024-06-27T17:32:06.146051
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_004T06_9000002536_17102cztM0_level2.evt modeM0/AS1A05_004T06_9000002536_17102cztM0_level2_quad_clean.evt
Size (bytes)874,200,960174,712,320
Size833.7 MB 166.6 MB
Events in quadrant A5,943,0541,123,492
Events in quadrant B6,523,7751,127,778
Events in quadrant C6,232,1581,082,260
Events in quadrant D6,898,7591,062,721

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264622
B0276572
C0266552
D0295042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129611301.003009%
B129611591.226757%
C129611541.188180%
D129612321.789985%

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 14221 12963 1 1 0.01% 0.01%
B 14221 12964 11 11 0.08% 0.08%
C 14221 12964 0 0 0.00% 0.00%
D 14221 12963 88 88 0.62% 0.68%

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 30015 91.49 1536 1499 311.7
A 0 226 13589 38.79 1536 1499 311.7
A 12 194 11351 31.61 1536 1499 311.7
B 7 220 183986 618.64 1528 1485 295.0
B 4 216 89849 299.54 1528 1485 295.0
B 15 32 63243 209.35 1528 1485 295.0
C 14 238 224911 645.78 1473 1480 346.0
C 3 233 176421 505.63 1473 1480 346.0
C 7 247 28680 78.62 1473 1480 346.0
D 5 222 326552 900.86 1490 1445 360.9
D 1 52 303020 835.66 1490 1445 360.9
D 10 70 229894 633.03 1490 1445 360.9

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