ASTROSAT CZTI

Data Quality Report

Orbit 52106

Creation date: 2025-05-17T01:28:55.103846
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/AS1C09_011T07_9000006470_52106cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52106cztM0_level2_quad_clean.evt
Size (bytes)505,287,36028,146,240
Size481.9 MB 26.8 MB
Events in quadrant A1,592,144296,201
Events in quadrant B3,950,172213,676
Events in quadrant C5,655,135130,560
Events in quadrant D7,278,1641,904

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0651
B0641
C0684
D0651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0142
C0120
D0153

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07155543
B014598818
C0201661359
D0257762190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2956632.131258%
B2946102534.792940%
C2932181061.732606%
D2901288799.517408%

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 6703 2989 24 24 0.36% 0.80%
B 6703 2985 775 775 11.56% 25.96%
C 6704 2965 1347 1347 20.09% 45.43%
D 6703 2944 2652 2652 39.56% 90.08%

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 8 43 139229 1670.85 331 323 83.1
A 4 3 66103 791.24 331 323 83.1
A 0 8 18088 213.69 331 323 83.1
B 8 3 2243737 41898.92 248 240 53.5
B 4 171 190339 3550.24 248 240 53.5
B 10 44 130246 2427.96 248 240 53.5
C 15 224 2912179 45059.38 232 230 64.6
C 5 80 984254 15226.75 232 230 64.6
C 13 3 282894 4373.93 232 230 64.6
D 6 42 5569321 186271.28 99 94 29.9
D 15 94 934130 31240.26 99 94 29.9
D 11 176 97137 3245.75 99 94 29.9

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