ASTROSAT CZTI

Data Quality Report

Orbit 20190628_A05_175T01_9000003004_level2

Creation date: 2025-12-01T18:50:10.908554
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_175T01_9000003004cztM0_level2.fits modeM0/AS1A05_175T01_9000003004cztM0_level2_quad_clean.evt
Size (bytes)705,775,680651,648,960
Size673.1 MB 621.5 MB
Events in quadrant A4,297,5183,832,485
Events in quadrant B4,207,2023,871,491
Events in quadrant C4,250,6483,709,005
Events in quadrant D3,684,0163,388,066

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01790820
B01612320
C01492220
D01767920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014660
B014660
C014660
D014660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7194536675.096949%
B7194516922.351797%
C7194510381.442769%
D7194523143.216346%

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 84550 71913 0 0 0.00% 0.00%
B 84550 71942 0 0 0.00% 0.00%
C 84550 71945 0 0 0.00% 0.00%
D 84550 71919 0 0 0.00% 0.00%

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 0 29 4146 11.28 1119 1050 274.5
A 7 110 3477 8.84 1119 1050 274.5
A 9 19 3238 7.97 1119 1050 274.5
B 2 9 3466 10.94 1112 1061 219.8
B 2 8 2885 8.3 1112 1061 219.8
B 3 17 2741 7.64 1112 1061 219.8
C 1 81 3239 7.63 1122 1049 287.2
C 1 80 3171 7.39 1122 1049 287.2
C 12 241 2937 6.57 1122 1049 287.2
D 6 231 2695 6.18 1053 960 280.6
D 6 67 2614 5.89 1053 960 280.6
D 3 14 2611 5.88 1053 960 280.6

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