ASTROSAT CZTI

Data Quality Report

Orbit 53613

Creation date: 2025-08-26T12:33:21.284247
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/AS1A14_004T05_9000006502_53613cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53613cztM0_level2_quad_clean.evt
Size (bytes)920,741,76074,306,880
Size878.1 MB 70.9 MB
Events in quadrant A7,839,462473,183
Events in quadrant B4,747,268669,047
Events in quadrant C14,232,316131,183
Events in quadrant D6,755,111517,767

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276791
B0185001
C0467481
D0245741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6573183127.856382%
B65722954.488740%
C6572535281.436397%
D657290013.694461%

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 7613 6571 1708 1708 22.44% 25.99%
B 7613 6571 185 185 2.43% 2.82%
C 7613 6540 4503 4503 59.15% 68.85%
D 7613 6571 909 909 11.94% 13.83%

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 95 2476020 15852.0 630 616 156.2
A 3 78 1484798 9504.41 630 616 156.2
A 15 174 674717 4316.81 630 616 156.2
B 2 249 800995 5288.99 709 682 151.3
B 10 254 490089 3234.32 709 682 151.3
B 5 172 326852 2155.55 709 682 151.3
C 1 3 7314537 101110.97 261 260 72.3
C 1 241 4101085 56688.91 261 260 72.3
C 15 224 921794 12739.08 261 260 72.3
D 8 176 2988131 15414.67 668 637 193.8
D 13 153 358041 1844.11 668 637 193.8
D 2 120 211445 1087.71 668 637 193.8

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