ASTROSAT CZTI

Data Quality Report

Orbit 50973

Creation date: 2025-03-01T18:53:06.406096
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/AS1C07_001T02_9000006452_50973cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50973cztM0_level2_quad_clean.evt
Size (bytes)813,689,28079,502,400
Size776.0 MB 75.8 MB
Events in quadrant A10,569,643385,491
Events in quadrant B6,329,121559,143
Events in quadrant C4,020,871589,247
Events in quadrant D8,701,242423,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357551
B0232421
C0164271
D0303001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6452289544.869808%
B6453137521.307919%
C64532413.734697%
D6453196530.450953%

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 7536 6451 2533 2533 33.61% 39.27%
B 7538 6453 1050 1050 13.93% 16.27%
C 7538 6453 170 170 2.26% 2.63%
D 7538 6453 1784 1784 23.67% 27.65%

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 14 254 4706762 32745.89 566 551 143.7
A 12 80 1863264 12960.79 566 551 143.7
A 8 43 1313109 9132.8 566 551 143.7
B 12 3 3312900 25624.53 615 597 129.3
B 4 81 285741 2205.92 615 597 129.3
B 8 128 58232 445.87 615 597 129.3
C 15 147 354310 1916.92 664 659 184.5
C 14 245 245213 1325.57 664 659 184.5
C 4 12 167990 906.99 664 659 184.5
D 8 176 5235752 31586.21 589 568 165.7
D 12 128 281903 1697.42 589 568 165.7
D 2 216 234350 1410.51 589 568 165.7

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