ASTROSAT CZTI

Data Quality Report

Orbit 16134

Creation date: 2024-06-27T17:18:29.364190
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_092T01_9000002384_16134cztM0_level2.evt modeM0/AS1T02_092T01_9000002384_16134cztM0_level2_quad_clean.evt
Size (bytes)477,031,68079,704,000
Size454.9 MB 76.0 MB
Events in quadrant A3,807,439498,920
Events in quadrant B3,578,632498,043
Events in quadrant C3,354,639474,230
Events in quadrant D3,255,503479,680

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152703
B0147342
C0140792
D0139392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66372413.631159%
B66371181.777912%
C66371051.582040%
D6637701.054693%

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 7613 6639 127 127 1.67% 1.91%
B 7613 6639 10 10 0.13% 0.15%
C 7613 6639 0 0 0.00% 0.00%
D 7613 6639 9 9 0.12% 0.14%

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 471725 2797.5 830 812 168.3
A 0 253 121059 714.34 830 812 168.3
A 8 247 11849 65.57 830 812 168.3
B 0 189 162967 1027.01 831 812 157.9
B 4 173 55405 345.77 831 812 157.9
B 0 197 46280 287.97 831 812 157.9
C 3 233 124772 667.84 789 793 185.6
C 14 238 122010 652.97 789 793 185.6
C 3 9 16768 86.05 789 793 185.6
D 1 52 143604 723.59 808 786 197.4
D 2 234 26489 130.22 808 786 197.4
D 10 70 25326 124.33 808 786 197.4

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