ASTROSAT CZTI

Data Quality Report

Orbit 54241

Creation date: 2025-10-07T19:12:32.120663
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_54241cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54241cztM0_level2_quad_clean.evt
Size (bytes)930,185,28072,498,240
Size887.1 MB 69.1 MB
Events in quadrant A5,723,881588,304
Events in quadrant B7,165,387539,330
Events in quadrant C8,863,939410,057
Events in quadrant D12,173,397201,843

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214972
B0257112
C0308548
D0406442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A653188813.596693%
B6532159624.433558%
C6531237536.365028%
D6531440667.462869%

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 7596 6533 638 638 8.40% 9.77%
B 7596 6533 1487 1487 19.58% 22.76%
C 7595 6531 1975 1975 26.00% 30.24%
D 7596 6532 3357 3357 44.19% 51.39%

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 7 29 2233505 13342.44 676 657 167.3
A 5 243 408085 2434.6 676 657 167.3
A 15 174 286485 1707.97 676 657 167.3
B 5 172 4323367 36615.72 553 534 118.1
B 5 185 154784 1306.54 553 534 118.1
B 4 171 127583 1076.14 553 534 118.1
C 1 29 4002010 26639.07 540 533 150.2
C 1 241 1700013 11313.96 540 533 150.2
C 15 215 739048 4916.52 540 533 150.2
D 8 176 10355302 105031.31 341 325 98.6
D 8 160 133330 1349.08 341 325 98.6
D 3 12 86229 871.33 341 325 98.6

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