ASTROSAT CZTI

Data Quality Report

Orbit 50598

Creation date: 2025-02-04T12:14:00.894225
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_239T01_9000006444_50598cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50598cztM0_level2_quad_clean.evt
Size (bytes)551,905,920100,900,800
Size526.3 MB 96.2 MB
Events in quadrant A4,045,444651,924
Events in quadrant B6,036,935667,519
Events in quadrant C4,406,122634,898
Events in quadrant D5,378,960596,734

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170321
B0229543
C0184461
D0211061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72442413.326891%
B724378810.879470%
C72433324.583736%
D72443334.596908%

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 7460 7247 62 62 0.83% 0.86%
B 7459 7247 461 461 6.18% 6.36%
C 7459 7247 183 183 2.45% 2.53%
D 7460 7248 269 269 3.61% 3.71%

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 8 247 312542 1678.03 760 740 185.8
A 12 250 147635 790.55 760 740 185.8
A 5 240 131177 701.98 760 740 185.8
B 5 172 831759 5354.01 735 709 155.2
B 5 32 642171 4132.6 735 709 155.2
B 4 170 480682 3092.21 735 709 155.2
C 4 5 541262 2671.26 731 725 202.4
C 15 147 156117 767.92 731 725 202.4
C 13 3 151263 743.94 731 725 202.4
D 12 191 546649 2692.6 728 701 202.8
D 8 48 383174 1886.35 728 701 202.8
D 2 249 326122 1604.97 728 701 202.8

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