ASTROSAT CZTI

Data Quality Report

Orbit 11531

Creation date: 2024-06-27T16:14:20.201961
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/AS1A04_022T05_9000001690_11531cztM0_level2.evt modeM0/AS1A04_022T05_9000001690_11531cztM0_level2_quad_clean.evt
Size (bytes)539,735,04069,350,400
Size514.7 MB 66.1 MB
Events in quadrant A4,631,934395,775
Events in quadrant B3,824,820403,558
Events in quadrant C3,139,691427,231
Events in quadrant D4,288,576399,280

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182313
B0156542
C0139242
D0175722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67973314.869795%
B67971912.810063%
C6797580.853318%
D67971051.544799%

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 8638 6800 158 158 1.83% 2.32%
B 8638 6800 51 51 0.59% 0.75%
C 8638 6800 0 0 0.00% 0.00%
D 8638 6800 40 40 0.46% 0.59%

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 1357853 8210.74 804 785 165.3
A 9 143 53095 316.49 804 785 165.3
A 1 162 41491 246.29 804 785 165.3
B 4 239 469280 2987.97 818 797 156.8
B 15 204 91185 576.49 818 797 156.8
B 12 111 18045 110.0 818 797 156.8
C 13 61 5854 27.03 803 810 186.6
C 7 236 4335 18.89 803 810 186.6
C 14 67 2991 11.69 803 810 186.6
D 5 222 726158 3798.49 792 771 191.0
D 1 52 176089 918.05 792 771 191.0
D 13 122 125638 653.87 792 771 191.0

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