ASTROSAT CZTI

Data Quality Report

Orbit 26537

Creation date: 2024-06-27T19:30:12.934084
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/AS1A09_095T02_9000003840_26537cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26537cztM0_level2_quad_clean.evt
Size (bytes)721,281,600124,364,160
Size687.9 MB 118.6 MB
Events in quadrant A4,122,663829,412
Events in quadrant B3,908,631846,928
Events in quadrant C5,128,237796,115
Events in quadrant D8,166,029760,374

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172920
B0165220
C0201720
D0295440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76721682.189781%
B7672961.251303%
C76724886.360792%
D7672107714.038060%

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 7897 7674 76 76 0.96% 0.99%
B 7897 7674 6 6 0.08% 0.08%
C 7897 7674 229 229 2.90% 2.98%
D 7897 7673 1005 1005 12.73% 13.10%

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 0 13 549635 3024.36 908 888 181.4
A 5 168 72123 392.6 908 888 181.4
A 13 254 10885 55.1 908 888 181.4
B 3 112 223575 1299.24 910 885 171.4
B 3 64 71825 413.89 910 885 171.4
B 12 111 20847 116.46 910 885 171.4
C 4 254 1424552 7093.54 863 867 200.7
C 3 233 204794 1016.07 863 867 200.7
C 14 238 138387 685.2 863 867 200.7
D 1 52 3465871 17489.05 836 816 198.1
D 7 80 1233858 6223.49 836 816 198.1
D 13 104 215348 1082.8 836 816 198.1

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