ASTROSAT CZTI

Data Quality Report

Orbit 10940

Creation date: 2024-06-27T16:05:58.602107
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/AS1C03_013T01_9000001586_10940cztM0_level2.evt modeM0/AS1C03_013T01_9000001586_10940cztM0_level2_quad_clean.evt
Size (bytes)445,484,16071,262,720
Size424.8 MB 68.0 MB
Events in quadrant A3,108,616446,283
Events in quadrant B4,126,501441,834
Events in quadrant C2,712,410444,197
Events in quadrant D3,152,554422,601

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127552
B0159451
C0117511
D0131131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5759811.406494%
B57593686.389998%
C5759280.486196%
D5759621.076576%

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 6939 5759 19 19 0.27% 0.33%
B 6939 5760 224 224 3.23% 3.89%
C 6939 5760 0 0 0.00% 0.00%
D 6939 5760 24 24 0.35% 0.42%

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 8 5 269409 1830.13 724 708 146.8
A 15 174 31832 211.99 724 708 146.8
A 11 29 8997 56.46 724 708 146.8
B 4 239 1238488 9201.62 705 690 134.5
B 0 214 35227 256.74 705 690 134.5
B 11 51 35082 255.67 705 690 134.5
C 13 61 5029 26.76 695 698 161.8
C 8 222 2735 12.58 695 698 161.8
C 3 202 1682 6.08 695 698 161.8
D 1 52 351872 2085.26 698 677 168.4
D 5 97 37554 218.96 698 677 168.4
D 13 249 26188 151.47 698 677 168.4

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