ASTROSAT CZTI

Data Quality Report

Orbit 50694

Creation date: 2025-02-11T09:54:06.472347
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/AS1T05_241T01_9000006446_50694cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50694cztM0_level2_quad_clean.evt
Size (bytes)494,294,40093,300,480
Size471.4 MB 89.0 MB
Events in quadrant A4,081,448605,368
Events in quadrant B4,348,837654,724
Events in quadrant C4,709,233578,800
Events in quadrant D4,660,780538,745

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162841
B0173151
C0184021
D0183131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64041862.904435%
B64052163.372365%
C64052704.215457%
D64042984.653342%

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 7434 6405 153 153 2.06% 2.39%
B 7435 6406 132 132 1.78% 2.06%
C 7435 6406 196 196 2.64% 3.06%
D 7434 6405 280 280 3.77% 4.37%

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 4 3 459442 2776.32 668 652 165.3
A 8 38 272515 1645.15 668 652 165.3
A 12 80 145863 878.73 668 652 165.3
B 4 170 587831 4188.6 666 642 140.2
B 7 0 376276 2679.52 666 642 140.2
B 7 252 148593 1055.38 666 642 140.2
C 13 113 943367 5253.62 654 647 179.4
C 15 231 462462 2573.62 654 647 179.4
C 15 174 190201 1056.35 654 647 179.4
D 14 195 378711 2096.37 648 624 180.4
D 2 249 253212 1400.51 648 624 180.4
D 2 163 240134 1328.0 648 624 180.4

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