ASTROSAT CZTI

Data Quality Report

Orbit 23393

Creation date: 2024-06-27T18:53:42.264139
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_138T09_9000003458_23393cztM0_level2.evt modeM0/AS1A07_138T09_9000003458_23393cztM0_level2_quad_clean.evt
Size (bytes)1,189,759,680217,866,240
Size1.1 GB 207.8 MB
Events in quadrant A7,935,7211,401,995
Events in quadrant B8,707,1791,419,688
Events in quadrant C8,160,4291,363,934
Events in quadrant D10,160,2761,321,965

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328163
B0351593
C0330793
D0401233

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158222421.529516%
B158233071.940214%
C158233041.921254%
D158235123.235796%

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 19447 15822 0 0 0.00% 0.00%
B 19448 15824 47 47 0.24% 0.30%
C 19448 15824 6 6 0.03% 0.04%
D 19448 15824 307 307 1.58% 1.94%

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 13 254 23100 51.82 2059 2016 406.8
A 0 226 18006 39.3 2059 2016 406.8
A 3 137 17039 36.93 2059 2016 406.8
B 0 190 400045 1068.67 2021 1977 372.5
B 0 189 245177 652.91 2021 1977 372.5
B 5 172 71502 186.65 2021 1977 372.5
C 14 238 318674 704.14 1972 1988 449.7
C 10 9 127643 279.39 1972 1988 449.7
C 13 61 14012 26.73 1972 1988 449.7
D 1 52 2282996 4729.25 1999 1943 482.3
D 12 233 232699 478.42 1999 1943 482.3
D 2 234 68485 137.96 1999 1943 482.3

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