ASTROSAT CZTI

Data Quality Report

Orbit 14752

Creation date: 2024-06-27T16:59:05.260374
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/AS1A04_203T01_9000002180_14752cztM0_level2.evt modeM0/AS1A04_203T01_9000002180_14752cztM0_level2_quad_clean.evt
Size (bytes)794,623,68076,982,400
Size757.8 MB 73.4 MB
Events in quadrant A12,377,489420,864
Events in quadrant B3,872,989485,586
Events in quadrant C4,040,865476,080
Events in quadrant D3,311,983471,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415033
B0157102
C0164082
D0143222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6840335749.078947%
B68403044.444444%
C68401221.783626%
D68401031.505848%

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 7511 6841 2853 2853 37.98% 41.70%
B 7510 6840 134 134 1.78% 1.96%
C 7511 6841 14 14 0.19% 0.20%
D 7511 6841 5 5 0.07% 0.07%

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 8 15 9404071 61515.92 753 738 152.9
A 12 189 68213 441.42 753 738 152.9
A 3 1 8301 49.48 753 738 152.9
B 4 142 434606 2659.11 850 829 163.1
B 0 229 32745 195.65 850 829 163.1
B 0 214 30615 182.59 850 829 163.1
C 3 233 591543 3029.27 835 840 195.0
C 4 254 168750 861.08 835 840 195.0
C 0 207 21566 106.29 835 840 195.0
D 2 120 44883 197.98 841 821 222.6
D 2 234 43320 190.96 841 821 222.6
D 2 14 14993 63.68 841 821 222.6

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