ASTROSAT CZTI

Data Quality Report

Orbit 52943

Creation date: 2025-07-17T07:53:57.299563
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/AS1A13_003T01_9000006486_52943cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52943cztM0_level2_quad_clean.evt
Size (bytes)976,936,32063,973,440
Size931.7 MB 61.0 MB
Events in quadrant A15,666,0367,070
Events in quadrant B2,807,656656,604
Events in quadrant C11,576,954325,542
Events in quadrant D5,637,257518,496

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0507346
B0130441
C0386891
D0210611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6148609999.202993%
B6148440.715680%
C6149302249.146203%
D61494958.050089%

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 7073 6148 5842 5842 82.60% 95.02%
B 7073 6149 13 13 0.18% 0.21%
C 7074 6149 2871 2871 40.59% 46.69%
D 7074 6150 436 436 6.16% 7.09%

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 9 191 14145877 249250.14 217 212 56.8
A 8 43 289671 5100.34 217 212 56.8
A 4 207 142876 2513.78 217 212 56.8
B 1 255 68532 486.43 643 621 139.6
B 8 3 33292 234.01 643 621 139.6
B 0 182 26949 188.58 643 621 139.6
C 15 254 5010998 37605.12 477 473 133.2
C 7 80 3142593 23582.31 477 473 133.2
C 4 177 551513 4135.68 477 473 133.2
D 15 78 1317933 7521.86 606 580 175.1
D 8 176 1271630 7257.48 606 580 175.1
D 11 176 205428 1169.65 606 580 175.1

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