ASTROSAT CZTI

Data Quality Report

Orbit 54192

Creation date: 2025-10-04T13:07:16.721940
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_004T08_9000006514_54192cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54192cztM0_level2_quad_clean.evt
Size (bytes)566,870,40080,049,600
Size540.6 MB 76.3 MB
Events in quadrant A3,133,130562,207
Events in quadrant B4,252,823612,051
Events in quadrant C3,518,748517,321
Events in quadrant D9,604,673305,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138311
B0167323
C0150981
D0327161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61001592.606557%
B60991402.295458%
C61003125.114754%
D6100269044.098361%

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 6995 6101 84 84 1.20% 1.38%
B 6994 6099 76 76 1.09% 1.25%
C 6995 6101 245 245 3.50% 4.02%
D 6994 6100 2383 2383 34.07% 39.07%

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 15 174 255367 1637.78 628 612 155.5
A 7 29 190427 1220.29 628 612 155.5
A 8 246 68854 438.72 628 612 155.5
B 5 236 888997 6600.37 627 606 134.6
B 15 20 525310 3898.33 627 606 134.6
B 4 171 79744 587.96 627 606 134.6
C 4 5 679623 4110.3 598 591 165.2
C 12 2 113118 681.15 598 591 165.2
C 9 38 97938 589.26 598 591 165.2
D 8 176 7408775 57924.04 446 427 127.9
D 3 12 303338 2368.39 446 427 127.9
D 5 173 34116 263.41 446 427 127.9

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