ASTROSAT CZTI

Data Quality Report

Orbit 16698

Creation date: 2024-06-27T17:26:22.841148
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_024T01_9000002472_16698cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16698cztM0_level2_quad_clean.evt
Size (bytes)3,091,956,480357,396,480
Size2.9 GB 340.8 MB
Events in quadrant A22,681,6292,317,001
Events in quadrant B14,975,7862,440,734
Events in quadrant C14,137,1492,347,890
Events in quadrant D39,906,3961,733,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0862756
B0623315
C0599525
D01383915

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28843303510.522484%
B288433971.376417%
C288434081.414555%
D28843977233.879971%

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 31664 28850 1974 1974 6.23% 6.84%
B 31664 28850 14 14 0.04% 0.05%
C 31664 28850 0 0 0.00% 0.00%
D 31664 28849 7543 7543 23.82% 26.15%

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 8642053 12451.84 3427 3359 693.8
A 12 96 690767 990.83 3427 3359 693.8
A 9 143 79710 110.05 3427 3359 693.8
B 15 35 506044 736.56 3564 3477 682.3
B 0 229 214816 309.74 3564 3477 682.3
B 0 189 102253 144.77 3564 3477 682.3
C 14 238 525758 652.75 3418 3452 800.2
C 3 233 230554 283.82 3418 3452 800.2
C 0 207 30707 34.06 3418 3452 800.2
D 1 52 23292589 34479.48 2767 2690 675.5
D 2 16 4913047 7269.53 2767 2690 675.5
D 5 222 572111 843.0 2767 2690 675.5

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