ASTROSAT CZTI

Data Quality Report

Orbit 26796

Creation date: 2024-06-27T19:33:03.509481
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_079T01_9000003864_26796cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26796cztM0_level2_quad_clean.evt
Size (bytes)627,929,280100,163,520
Size598.8 MB 95.5 MB
Events in quadrant A3,945,262668,408
Events in quadrant B3,493,683667,099
Events in quadrant C3,375,969666,282
Events in quadrant D7,756,670572,406

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159810
B0145580
C0140870
D0276550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65791542.340781%
B65802894.392097%
C65802123.221884%
D6580140521.352584%

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 7154 6579 3 3 0.04% 0.05%
B 7155 6580 132 132 1.84% 2.01%
C 7155 6580 21 21 0.29% 0.32%
D 7155 6581 1227 1227 17.15% 18.64%

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 830949 5188.32 797 778 160.0
A 5 203 40499 248.24 797 778 160.0
A 13 254 10350 59.82 797 778 160.0
B 10 246 339475 2309.22 774 752 146.7
B 15 33 62882 423.57 774 752 146.7
B 0 229 40743 272.64 774 752 146.7
C 15 208 133087 739.27 771 777 179.0
C 14 238 124166 689.43 771 777 179.0
C 3 233 65483 361.54 771 777 179.0
D 7 80 3687639 21588.99 719 698 170.8
D 1 52 1086115 6355.69 719 698 170.8
D 2 250 220711 1288.29 719 698 170.8

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