ASTROSAT CZTI

Data Quality Report

Orbit 22803

Creation date: 2024-06-27T18:46:00.368725
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_054T01_9000003370_22803cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22803cztM0_level2_quad_clean.evt
Size (bytes)569,592,000141,733,440
Size543.2 MB 135.2 MB
Events in quadrant A3,500,970981,658
Events in quadrant B3,668,324973,250
Events in quadrant C3,604,716925,922
Events in quadrant D5,970,051892,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153272
B0157442
C0154902
D0227602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7458410.549745%
B74581001.340842%
C74581241.662644%
D74586448.635023%

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 7808 7459 0 0 0.00% 0.00%
B 7808 7459 0 0 0.00% 0.00%
C 7808 7459 3 3 0.04% 0.04%
D 7808 7458 390 390 4.99% 5.23%

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 14090 72.58 906 888 181.9
A 0 226 7950 38.83 906 888 181.9
A 3 137 7531 36.52 906 888 181.9
B 0 190 60228 349.78 897 873 169.7
B 0 228 46601 269.47 897 873 169.7
B 0 230 30023 171.78 897 873 169.7
C 14 238 138263 678.38 866 873 202.5
C 2 16 30696 147.25 866 873 202.5
C 0 207 22905 108.79 866 873 202.5
D 1 52 2250639 10912.87 857 835 206.2
D 6 112 167111 806.54 857 835 206.2
D 2 152 121988 587.66 857 835 206.2

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