ASTROSAT CZTI

Data Quality Report

Orbit 16200

Creation date: 2024-06-27T17:19:16.620961
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/AS1T02_109T01_9000002386_16200cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16200cztM0_level2_quad_clean.evt
Size (bytes)619,640,64074,275,200
Size590.9 MB 70.8 MB
Events in quadrant A4,584,422452,193
Events in quadrant B3,564,762462,122
Events in quadrant C3,465,744445,103
Events in quadrant D6,676,799401,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182466
B0149932
C0146664
D0245912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70032163.084392%
B7004630.899486%
C7003941.342282%
D700498013.992005%

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 7575 7006 131 131 1.73% 1.87%
B 7575 7006 1 1 0.01% 0.01%
C 7575 7006 0 0 0.00% 0.00%
D 7575 7005 697 697 9.20% 9.95%

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 15 174 783672 4489.26 855 837 174.4
A 8 247 503964 2885.24 855 837 174.4
A 4 2 8358 43.13 855 837 174.4
B 4 216 70976 416.7 869 847 168.3
B 0 189 29017 167.38 869 847 168.3
B 0 229 19448 110.53 869 847 168.3
C 14 238 127830 656.12 830 834 193.6
C 10 22 46138 234.06 830 834 193.6
C 3 233 30637 153.98 830 834 193.6
D 2 233 2457331 12326.89 807 781 199.3
D 1 52 957812 4802.35 807 781 199.3
D 5 222 103691 516.4 807 781 199.3

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