ASTROSAT CZTI

Data Quality Report

Orbit 36237

Creation date: 2022-06-13T12:28:48.305127
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/AS1A10_071T34_9000005178_36237cztM0_level2.evt modeM0/AS1A10_071T34_9000005178_36237cztM0_level2_quad_clean.evt
Size (bytes)624,585,60086,120,640
Size595.7 MB 82.1 MB
Events in quadrant A3,363,900556,412
Events in quadrant B4,003,466554,770
Events in quadrant C3,634,876552,085
Events in quadrant D7,448,820466,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141413
B0162152
C0146852
D0267842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6859120.174953%
B68591472.143170%
C6859380.554017%
D6859117717.159936%

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 9633 6861 4 4 0.04% 0.06%
B 9633 6860 103 103 1.07% 1.50%
C 9633 6861 25 25 0.26% 0.36%
D 9633 6861 1136 1136 11.79% 16.56%

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 10 83 205512 1254.85 804 787 163.1
A 9 143 20062 118.14 804 787 163.1
A 13 254 12031 68.92 804 787 163.1
B 5 172 331759 2156.43 795 774 153.5
B 5 236 279732 1817.46 795 774 153.5
B 5 200 49053 314.55 795 774 153.5
C 15 214 285544 1551.53 784 788 183.5
C 0 10 191335 1038.22 784 788 183.5
C 12 250 60827 327.13 784 788 183.5
D 12 227 3000170 16648.94 734 714 180.2
D 12 6 715570 3967.92 734 714 180.2
D 12 235 232598 1287.11 734 714 180.2

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