ASTROSAT CZTI

Data Quality Report

Orbit 37545

Creation date: 2024-06-27T21:41:21.361046
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/AS1T05_051T01_9000005334_37545cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37545cztM0_level2_quad_clean.evt
Size (bytes)1,710,074,880251,717,760
Size1.6 GB 240.1 MB
Events in quadrant A14,707,3311,577,305
Events in quadrant B10,929,3971,608,004
Events in quadrant C10,131,4871,616,289
Events in quadrant D14,734,6421,504,960

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0562438
B0447734
C0420704
D0567394

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191168934.671479%
B191174942.584087%
C191171910.999111%
D1911710675.581420%

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 25211 19121 650 650 2.58% 3.40%
B 25211 19121 359 359 1.42% 1.88%
C 25211 19121 199 199 0.79% 1.04%
D 25211 19121 1072 1072 4.25% 5.61%

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 15 222 4569694 10549.87 2142 2102 433.0
A 10 83 927043 2136.36 2142 2102 433.0
A 6 10 739889 1704.08 2142 2102 433.0
B 5 172 682904 1675.22 2141 2085 406.4
B 5 255 446412 1093.31 2141 2085 406.4
B 0 221 400588 980.55 2141 2085 406.4
C 15 214 812243 1668.0 2093 2107 485.7
C 14 254 642422 1318.35 2093 2107 485.7
C 0 10 279433 570.99 2093 2107 485.7
D 2 249 2353906 4736.72 2045 1989 496.5
D 12 235 2046835 4118.28 2045 1989 496.5
D 12 233 509349 1021.81 2045 1989 496.5

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