ASTROSAT CZTI

Data Quality Report

Orbit 52298

Creation date: 2025-07-22T14:01:16.690047
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_011T05_9000006474_52298cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52298cztM0_level2_quad_clean.evt
Size (bytes)936,745,92081,668,160
Size893.4 MB 77.9 MB
Events in quadrant A4,501,331659,671
Events in quadrant B6,549,191639,139
Events in quadrant C12,925,459289,026
Events in quadrant D10,161,613400,054

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182630
B0243200
C0431660
D0350220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69483294.735176%
B694993613.469564%
C6949434262.483811%
D6949283440.782846%

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 6948 6948 261 261 3.76% 3.76%
B 6949 6949 613 613 8.82% 8.82%
C 6948 6948 3661 3661 52.69% 52.69%
D 6949 6949 2461 2461 35.42% 35.42%

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 4 249 585704 3189.64 724 707 183.4
A 7 206 518960 2825.73 724 707 183.4
A 5 240 96145 520.37 724 707 183.4
B 12 32 1884869 13051.26 685 663 144.4
B 4 171 577926 3998.5 685 663 144.4
B 10 254 457272 3162.77 685 663 144.4
C 0 161 3853641 30940.67 444 441 124.5
C 15 178 2952725 23706.44 444 441 124.5
C 15 224 2098128 16844.14 444 441 124.5
D 15 93 5081627 31196.53 560 533 162.9
D 6 42 1738443 10670.29 560 533 162.9
D 8 176 346586 2124.67 560 533 162.9

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