ASTROSAT CZTI

Data Quality Report

Orbit 54090

Creation date: 2025-09-27T16:24:23.804623
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_041T01_9000006510_54090cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54090cztM0_level2_quad_clean.evt
Size (bytes)552,473,28095,808,960
Size526.9 MB 91.4 MB
Events in quadrant A4,249,116611,702
Events in quadrant B3,340,980700,888
Events in quadrant C3,859,593604,268
Events in quadrant D8,464,497502,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01769231
B0148087
C01647913
D0300997

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69124806.944444%
B69141341.938097%
C69111752.532195%
D6915111216.080983%

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 7697 6917 325 325 4.22% 4.70%
B 7698 6917 27 27 0.35% 0.39%
C 7698 6917 82 82 1.07% 1.19%
D 7697 6918 990 990 12.86% 14.31%

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 13 248 738534 4224.85 718 702 174.6
A 0 8 509359 2912.59 718 702 174.6
A 14 235 101763 578.68 718 702 174.6
B 0 213 144473 913.81 732 707 157.3
B 5 236 55843 350.46 732 707 157.3
B 15 20 44309 277.15 732 707 157.3
C 1 16 507963 2618.79 705 698 193.7
C 15 233 186349 958.44 705 698 193.7
C 13 3 91637 469.48 705 698 193.7
D 2 165 2133166 11303.61 667 637 188.7
D 8 176 1761194 9331.95 667 637 188.7
D 2 172 687260 3639.49 667 637 188.7

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