ASTROSAT CZTI

Data Quality Report

Orbit 53551

Creation date: 2025-08-22T09:24:17.454501
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/AS1A14_004T05_9000006502_53551cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53551cztM0_level2_quad_clean.evt
Size (bytes)879,903,360130,489,920
Size839.1 MB 124.4 MB
Events in quadrant A9,405,073790,946
Events in quadrant B4,994,762964,312
Events in quadrant C10,126,655728,181
Events in quadrant D7,288,911790,693

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347451
B0220281
C0369601
D0286951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9762159116.297890%
B97632282.335348%
C9763183418.785209%
D97636066.207108%

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 10132 9763 1365 1365 13.47% 13.98%
B 10133 9763 101 101 1.00% 1.03%
C 10133 9763 1551 1551 15.31% 15.89%
D 10133 9764 580 580 5.72% 5.94%

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 3 63 3335080 13482.93 991 966 247.3
A 15 174 779115 3146.78 991 966 247.3
A 12 115 560653 2263.34 991 966 247.3
B 10 254 143964 646.95 1043 1006 221.0
B 2 249 124000 556.6 1043 1006 221.0
B 5 185 111605 500.51 1043 1006 221.0
C 15 224 4696837 18245.45 932 922 257.4
C 15 147 561808 2179.26 932 922 257.4
C 6 226 253107 979.84 932 922 257.4
D 15 94 1082260 3760.7 1004 958 287.5
D 13 153 404721 1404.26 1004 958 287.5
D 3 12 290840 1008.19 1004 958 287.5

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