ASTROSAT CZTI

Data Quality Report

Orbit 26951

Creation date: 2024-06-27T19:34:51.169515
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_134T01_9000003896_26951cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26951cztM0_level2_quad_clean.evt
Size (bytes)906,776,64075,905,280
Size864.8 MB 72.4 MB
Events in quadrant A5,389,520499,765
Events in quadrant B10,723,537417,915
Events in quadrant C3,176,816514,544
Events in quadrant D7,769,624447,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197260
B0360350
C0128470
D0271630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A597791215.258491%
B5977333655.813953%
C5977550.920194%
D5977147124.611009%

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 7297 5978 727 727 9.96% 12.16%
B 7297 5977 2809 2809 38.50% 47.00%
C 7297 5978 2 2 0.03% 0.03%
D 7297 5978 1512 1512 20.72% 25.29%

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 14 235 2464881 16637.06 746 736 148.1
A 8 192 26006 170.61 746 736 148.1
A 5 168 16040 103.33 746 736 148.1
B 0 189 7897867 62378.12 692 677 126.6
B 5 172 61955 484.02 692 677 126.6
B 3 112 22255 170.44 692 677 126.6
C 14 238 127126 708.38 774 779 178.4
C 15 208 16962 90.73 774 779 178.4
C 2 16 11607 60.71 774 779 178.4
D 1 52 3090192 18568.11 702 684 166.4
D 12 1 1546756 9291.97 702 684 166.4
D 2 250 238872 1431.52 702 684 166.4

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