ASTROSAT CZTI

Data Quality Report

Orbit 15284

Creation date: 2024-06-27T17:06:36.847377
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_037T01_9000002256_15284cztM0_level2.evt modeM0/AS1G08_037T01_9000002256_15284cztM0_level2_quad_clean.evt
Size (bytes)488,836,800102,790,080
Size466.2 MB 98.0 MB
Events in quadrant A3,210,096694,980
Events in quadrant B4,849,756675,039
Events in quadrant C3,234,260669,807
Events in quadrant D3,093,287644,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133992
B0184341
C0133611
D0132271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6146931.513179%
B614663910.397006%
C6146610.992515%
D6146861.399284%

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 7432 6147 1 1 0.01% 0.02%
B 7432 6147 364 364 4.90% 5.92%
C 7432 6147 0 0 0.00% 0.00%
D 7432 6147 6 6 0.08% 0.10%

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 12 189 51612 306.99 819 808 165.5
A 9 143 14301 81.53 819 808 165.5
A 0 226 7530 40.62 819 808 165.5
B 10 16 1452552 9933.26 771 755 146.2
B 0 85 185222 1262.13 771 755 146.2
B 0 219 49628 334.39 771 755 146.2
C 3 233 199341 1113.19 777 784 178.4
C 13 61 5658 27.33 777 784 178.4
C 4 238 3768 16.73 777 784 178.4
D 7 38 33767 169.84 788 764 194.3
D 2 33 24702 123.19 788 764 194.3
D 2 234 22630 112.53 788 764 194.3

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