ASTROSAT CZTI

Data Quality Report

Orbit 04375

Creation date: 2024-06-27T14:41:06.353507
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/AS1G05_252T01_9000000544_04375cztM0_level2.evt modeM0/AS1G05_252T01_9000000544_04375cztM0_level2_quad_clean.evt
Size (bytes)508,268,16083,779,200
Size484.7 MB 79.9 MB
Events in quadrant A3,451,304521,976
Events in quadrant B3,369,323521,290
Events in quadrant C4,211,958494,960
Events in quadrant D3,869,887495,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152362
B0148991
C0174911
D0166191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7224580.802879%
B7224420.581395%
C72242152.976190%
D7224891.232004%

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 7564 7224 17 17 0.22% 0.24%
B 7564 7224 0 0 0.00% 0.00%
C 7564 7224 183 183 2.42% 2.53%
D 7564 7224 52 52 0.69% 0.72%

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 0 50 59364 332.02 851 831 176.3
A 13 248 34884 193.16 851 831 176.3
A 15 234 26263 144.26 851 831 176.3
B 15 54 15370 87.32 856 836 166.4
B 12 111 13608 76.73 856 836 166.4
B 8 3 12153 67.99 856 836 166.4
C 14 48 898008 4723.03 810 815 190.0
C 9 16 82777 431.46 810 815 190.0
C 9 247 20694 104.65 810 815 190.0
D 2 63 337585 1678.49 820 795 200.7
D 2 136 261966 1301.62 820 795 200.7
D 10 172 49463 242.55 820 795 200.7

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