ASTROSAT CZTI

Data Quality Report

Orbit 27783

Creation date: 2024-06-27T19:44:22.232826
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/AS1A10_016T01_9000004016_27783cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27783cztM0_level2_quad_clean.evt
Size (bytes)484,591,68087,871,680
Size462.1 MB 83.8 MB
Events in quadrant A3,155,565561,493
Events in quadrant B3,262,527567,987
Events in quadrant C3,226,536541,273
Events in quadrant D4,574,517521,282

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138720
B0140810
C0139680
D0183970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727540.802735%
B6727851.263565%
C67261031.531371%
D67272583.835291%

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 7107 6728 0 0 0.00% 0.00%
B 7107 6727 1 1 0.01% 0.01%
C 7106 6726 0 0 0.00% 0.00%
D 7107 6727 187 187 2.63% 2.78%

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 10518 58.24 816 797 166.9
A 3 137 8010 43.21 816 797 166.9
A 0 226 7007 37.2 816 797 166.9
B 4 52 28822 175.29 813 790 159.9
B 12 111 19670 118.06 813 790 159.9
B 11 111 17684 105.64 813 790 159.9
C 14 238 124819 667.17 780 786 185.9
C 3 233 62128 329.96 780 786 185.9
C 13 61 5163 23.54 780 786 185.9
D 1 52 436961 2298.46 775 751 189.8
D 7 223 392612 2064.78 775 751 189.8
D 7 69 376764 1981.27 775 751 189.8

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