ASTROSAT CZTI

Data Quality Report

Orbit 23982

Creation date: 2024-06-27T19:00:47.660872
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_065T01_9000003554_23982cztM0_level2.evt modeM0/AS1A07_065T01_9000003554_23982cztM0_level2_quad_clean.evt
Size (bytes)760,662,72062,107,200
Size725.4 MB 59.2 MB
Events in quadrant A3,408,253409,267
Events in quadrant B3,613,118416,726
Events in quadrant C3,431,859389,416
Events in quadrant D12,142,426209,668

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140632
B0146992
C0140692
D04050910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6508911.398279%
B65081061.628765%
C65081392.135833%
D6507419264.422929%

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 7653 6508 0 0 0.00% 0.00%
B 7653 6509 2 2 0.03% 0.03%
C 7653 6509 17 17 0.22% 0.26%
D 7652 6507 3143 3143 41.07% 48.30%

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 9220 47.31 885 869 176.5
A 0 226 7653 38.43 885 869 176.5
A 3 137 7501 37.57 885 869 176.5
B 0 197 159939 969.04 874 852 164.2
B 12 111 20211 117.92 874 852 164.2
B 11 111 18207 105.71 874 852 164.2
C 14 238 134702 701.68 824 830 190.8
C 0 10 85013 441.24 824 830 190.8
C 13 61 5549 24.73 824 830 190.8
D 12 218 9118609 70533.75 529 513 129.3
D 12 250 485852 3754.38 529 513 129.3
D 12 202 174550 1346.28 529 513 129.3

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