ASTROSAT CZTI

Data Quality Report

Orbit 28764

Creation date: 2024-06-27T19:56:00.365494
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_093T01_9000004128_28764cztM0_level2.evt modeM0/AS1A10_093T01_9000004128_28764cztM0_level2_quad_clean.evt
Size (bytes)630,959,04093,988,800
Size601.7 MB 89.6 MB
Events in quadrant A3,335,551633,156
Events in quadrant B4,027,838633,203
Events in quadrant C4,690,776582,858
Events in quadrant D6,613,924542,520

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135801
B0158131
C0185731
D0240721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65151101.688411%
B65163044.665439%
C65162183.345611%
D651679812.246777%

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 7465 6515 0 0 0.00% 0.00%
B 7466 6516 143 143 1.92% 2.19%
C 7466 6516 9 9 0.12% 0.14%
D 7466 6516 724 724 9.70% 11.11%

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 14 239 28351 161.17 850 835 170.7
A 15 174 16897 94.08 850 835 170.7
A 13 254 11301 61.3 850 835 170.7
B 5 255 458251 2945.98 830 812 155.3
B 4 80 223940 1436.98 830 812 155.3
B 0 244 24276 151.11 830 812 155.3
C 3 233 1358495 7354.04 792 798 184.6
C 14 238 133288 717.64 792 798 184.6
C 4 254 98249 527.85 792 798 184.6
D 1 52 2182189 11876.0 775 754 183.7
D 8 195 1150455 6259.11 775 754 183.7
D 12 233 185500 1005.78 775 754 183.7

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