ASTROSAT CZTI

Data Quality Report

Orbit 54958

Creation date: 2025-11-25T02:08:32.344744
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_014T01_9000006528_54958cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54958cztM0_level2_quad_clean.evt
Size (bytes)845,861,76090,204,480
Size806.7 MB 86.0 MB
Events in quadrant A3,998,615706,519
Events in quadrant B3,541,414765,846
Events in quadrant C4,243,524669,862
Events in quadrant D18,935,96559,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01739021
B01625712
C01815023
D061731179

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76121441.891750%
B7617871.142182%
C76111992.614637%
D7594698491.967343%

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 7623 7618 126 126 1.65% 1.65%
B 7624 7622 22 22 0.29% 0.29%
C 7624 7621 148 148 1.94% 1.94%
D 7623 7615 6643 6643 87.14% 87.24%

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 0 8 619493 3006.71 827 804 205.8
A 3 14 75702 363.99 827 804 205.8
A 4 3 52808 252.73 827 804 205.8
B 7 252 82149 460.65 819 790 176.6
B 5 185 65922 368.77 819 790 176.6
B 2 249 54239 302.62 819 790 176.6
C 4 5 460811 2083.82 803 797 220.8
C 15 147 218288 985.21 803 797 220.8
C 14 254 74026 331.72 803 797 220.8
D 15 94 16760479 204570.34 285 272 81.9
D 2 249 291603 3555.9 285 272 81.9
D 15 201 180928 2205.04 285 272 81.9

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