ASTROSAT CZTI

Data Quality Report

Orbit 59053

Creation date: 2026-08-28T04:04:29.414473
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_004T02_9000006600_59053cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59053cztM0_level2_quad_clean.evt
Size (bytes)925,130,88082,379,520
Size882.3 MB 78.6 MB
Events in quadrant A6,207,361586,382
Events in quadrant B3,650,043721,624
Events in quadrant C7,628,481595,590
Events in quadrant D16,211,50098,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229622
B0157252
C0276832
D0529932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7069117716.650163%
B70702323.281471%
C707086112.178218%
D7070604685.516266%

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 7728 7069 938 938 12.14% 13.27%
B 7730 7071 37 37 0.48% 0.52%
C 7730 7071 612 612 7.92% 8.66%
D 7730 7070 5351 5351 69.22% 75.69%

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 15 233 2631270 14839.97 726 707 177.3
A 3 14 413111 2326.52 726 707 177.3
A 14 238 144404 810.65 726 707 177.3
B 5 185 220431 1306.72 786 757 168.1
B 4 236 135201 799.74 786 757 168.1
B 5 236 72833 428.74 786 757 168.1
C 15 219 3207325 15821.21 737 728 202.7
C 4 5 833468 4108.7 737 728 202.7
C 2 12 250485 1232.29 737 728 202.7
D 12 1 14208270 192691.37 253 241 73.7
D 6 239 667372 9047.73 253 241 73.7
D 8 160 140223 1898.46 253 241 73.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct