ASTROSAT CZTI

Data Quality Report

Orbit 23119

Creation date: 2024-06-27T18:50:09.837497
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/AS1A08_008T01_9000003414_23119cztM0_level2.evt modeM0/AS1A08_008T01_9000003414_23119cztM0_level2_quad_clean.evt
Size (bytes)714,795,840130,484,160
Size681.7 MB 124.4 MB
Events in quadrant A8,577,926773,081
Events in quadrant B3,469,339951,439
Events in quadrant C3,887,359888,638
Events in quadrant D5,227,154837,904

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303992
B0149982
C0161752
D0204402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7178199327.765394%
B7178861.198105%
C71781802.507662%
D71785377.481193%

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 7888 7178 1716 1716 21.75% 23.91%
B 7888 7179 7 7 0.09% 0.10%
C 7888 7179 58 58 0.74% 0.81%
D 7888 7179 434 434 5.50% 6.05%

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 6 16 5770377 39329.02 728 712 146.7
A 13 254 9795 61.91 728 712 146.7
A 3 137 6237 37.66 728 712 146.7
B 0 190 60148 372.34 850 829 159.3
B 0 245 28282 172.32 850 829 159.3
B 0 189 21840 131.88 850 829 159.3
C 0 207 326319 1733.75 811 816 187.7
C 2 16 134470 711.89 811 816 187.7
C 14 238 129786 686.94 811 816 187.7
D 12 233 661477 3467.64 791 768 190.5
D 1 52 622212 3261.56 791 768 190.5
D 13 153 564714 2959.79 791 768 190.5

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