ASTROSAT CZTI

Data Quality Report

Orbit 48330

Creation date: 2024-09-04T18:56:05.445280
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/AS1A13_029T01_9000006422_48330cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48330cztM0_level2_quad_clean.evt
Size (bytes)2,793,240,000614,105,280
Size2.6 GB 585.7 MB
Events in quadrant A39,768,7374,047,112
Events in quadrant B20,571,9884,225,955
Events in quadrant C17,183,5234,064,398
Events in quadrant D22,924,9053,630,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01458226
B0869446
C0788587
D0953727

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07780
B07780
C07780
D07780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3822015103.950811%
B382207882.061748%
C382192220.580863%
D3821813333.487885%

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 44780 38226 416 416 0.93% 1.09%
B 44780 38226 304 304 0.68% 0.80%
C 44779 38226 48 48 0.11% 0.13%
D 44779 38224 919 919 2.05% 2.40%

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 10 83 21699518 24557.92 4270 4179 883.4
A 13 248 1314499 1483.21 4270 4179 883.4
A 13 254 78583 84.22 4270 4179 883.4
B 5 255 1723129 2056.53 4273 4136 835.9
B 4 21 1209926 1442.56 4273 4136 835.9
B 0 186 359796 425.5 4273 4136 835.9
C 12 2 362046 359.98 4235 4266 993.9
C 12 249 108634 105.01 4235 4266 993.9
C 12 250 74492 70.66 4235 4266 993.9
D 12 2 1978604 1874.88 4210 4087 1053.1
D 2 165 1728832 1637.71 4210 4087 1053.1
D 2 249 1095206 1036.06 4210 4087 1053.1

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