ASTROSAT CZTI

Data Quality Report

Orbit 49784

Creation date: 2024-12-12T13:18:10.806982
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_037T01_9000006440_49784cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49784cztM0_level2_quad_clean.evt
Size (bytes)1,013,993,28048,744,000
Size967.0 MB 46.5 MB
Events in quadrant A7,235,376336,071
Events in quadrant B4,453,705643,781
Events in quadrant C9,161,6866,326
Events in quadrant D16,178,79836,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02604925
B0178187
C03177634
D05260042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6490321449.522342%
B64924677.193469%
C6489643599.167822%
D6488615694.882861%

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 7242 6492 950 950 13.12% 14.63%
B 7244 6495 179 179 2.47% 2.76%
C 7242 6488 1567 1567 21.64% 24.15%
D 7242 6489 5576 5576 77.00% 85.93%

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 8 8 3081408 25360.29 472 460 121.5
A 15 63 744204 6122.0 472 460 121.5
A 3 130 238180 1956.75 472 460 121.5
B 4 171 324304 2196.73 697 676 147.3
B 5 185 231860 1569.24 697 676 147.3
B 4 206 220055 1489.11 697 676 147.3
C 15 147 3858416 134131.06 72 70 28.8
C 15 198 1336559 46461.54 72 70 28.8
C 15 148 1262132 43874.17 72 70 28.8
D 8 129 4676257 55817.35 247 236 83.8
D 15 142 2144960 25601.43 247 236 83.8
D 15 168 2070808 24716.28 247 236 83.8

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