ASTROSAT CZTI

Data Quality Report

Orbit 52135

Creation date: 2025-05-19T00:26:30.698020
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/AS1C09_011T07_9000006470_52135cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52135cztM0_level2_quad_clean.evt
Size (bytes)774,296,64069,304,320
Size738.4 MB 66.1 MB
Events in quadrant A4,266,742543,659
Events in quadrant B4,206,324558,325
Events in quadrant C6,434,646452,536
Events in quadrant D13,308,343141,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165271
B0164931
C0231116
D0434581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57553315.751520%
B57555729.939183%
C5754124321.602364%
D5754443777.111575%

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 6875 5756 197 197 2.87% 3.42%
B 6875 5755 283 283 4.12% 4.92%
C 6874 5755 973 973 14.15% 16.91%
D 6873 5753 4229 4229 61.53% 73.51%

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 6 162 599132 3950.88 600 587 151.5
A 7 160 228913 1507.14 600 587 151.5
A 14 254 162389 1068.02 600 587 151.5
B 12 32 974815 7894.43 583 564 123.4
B 4 81 320764 2594.6 583 564 123.4
B 5 172 128448 1036.25 583 564 123.4
C 15 224 3359202 22328.24 548 544 150.4
C 15 193 313260 2078.93 548 544 150.4
C 15 231 84402 557.49 548 544 150.4
D 15 94 4390260 40820.28 369 352 107.5
D 6 42 4320873 40175.07 369 352 107.5
D 12 3 1038027 9648.99 369 352 107.5

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