ASTROSAT CZTI

Data Quality Report

Orbit 27463

Creation date: 2024-06-27T19:40:20.555505
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/AS1T03_249T01_9000003934_27463cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27463cztM0_level2_quad_clean.evt
Size (bytes)514,131,84090,656,640
Size490.3 MB 86.5 MB
Events in quadrant A3,710,452564,512
Events in quadrant B3,766,821569,037
Events in quadrant C3,913,088542,765
Events in quadrant D3,664,672540,977

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157770
B0158910
C0163790
D0160770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75841501.977848%
B75841862.452532%
C75842733.599684%
D75841281.687764%

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 7814 7584 0 0 0.00% 0.00%
B 7814 7584 3 3 0.04% 0.04%
C 7814 7584 23 23 0.29% 0.30%
D 7814 7584 13 13 0.17% 0.17%

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 11720 55.27 961 938 195.1
A 3 137 9393 43.34 961 938 195.1
A 0 226 7989 36.15 961 938 195.1
B 12 111 23066 118.87 947 918 186.3
B 4 52 20938 107.45 947 918 186.3
B 11 111 20639 105.85 947 918 186.3
C 14 238 144670 663.81 914 919 216.6
C 15 208 114168 522.96 914 919 216.6
C 10 22 86072 393.22 914 919 216.6
D 2 250 89423 399.46 933 909 221.6
D 2 234 32705 143.49 933 909 221.6
D 1 52 22833 98.94 933 909 221.6

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