ASTROSAT CZTI

Data Quality Report

Orbit 27694

Creation date: 2024-06-27T19:43:13.589690
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/AS1T03_262T01_9000003988_27694cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27694cztM0_level2_quad_clean.evt
Size (bytes)527,011,20093,412,800
Size502.6 MB 89.1 MB
Events in quadrant A3,395,878591,564
Events in quadrant B3,469,900603,896
Events in quadrant C3,610,038579,296
Events in quadrant D4,995,359552,091

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148430
B0149340
C0152500
D0198840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7200921.277778%
B71991301.805806%
C71991552.153077%
D71994115.709126%

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 7625 7200 0 0 0.00% 0.00%
B 7624 7199 1 1 0.01% 0.01%
C 7624 7199 22 22 0.29% 0.31%
D 7624 7199 276 276 3.62% 3.83%

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 6 16 15066 80.41 874 854 176.7
A 13 254 11837 62.14 874 854 176.7
A 8 192 10659 55.48 874 854 176.7
B 12 111 21096 120.03 872 848 168.7
B 0 190 20552 116.81 872 848 168.7
B 11 111 18593 105.2 872 848 168.7
C 3 233 151098 755.61 847 852 198.8
C 14 238 135458 676.96 847 852 198.8
C 8 208 22067 106.69 847 852 198.8
D 12 2 785702 3921.46 838 813 200.2
D 1 52 741184 3699.04 838 813 200.2
D 11 176 128006 635.48 838 813 200.2

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