ASTROSAT CZTI

Data Quality Report

Orbit 53807

Creation date: 2025-09-08T14:16:28.815522
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_022T04_9000006506_53807cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53807cztM0_level2_quad_clean.evt
Size (bytes)989,426,88073,909,440
Size943.6 MB 70.5 MB
Events in quadrant A14,155,003242,401
Events in quadrant B3,376,382680,213
Events in quadrant C7,799,647515,341
Events in quadrant D10,760,803319,038

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0469141
B0151861
C0279701
D0366841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6895456566.207397%
B68962343.393271%
C6896144320.925174%
D6896339449.216937%

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 7530 6896 4399 4399 58.42% 63.79%
B 7531 6898 49 49 0.65% 0.71%
C 7531 6898 1030 1030 13.68% 14.93%
D 7530 6896 2622 2622 34.82% 38.02%

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 3 63 11803887 97970.24 487 473 120.5
A 8 249 142658 1180.16 487 473 120.5
A 2 143 101492 838.47 487 473 120.5
B 5 185 343993 2204.9 724 695 155.7
B 0 213 48372 306.21 724 695 155.7
B 7 252 31255 196.28 724 695 155.7
C 15 224 4364310 24358.89 651 646 179.1
C 12 2 241535 1344.69 651 646 179.1
C 1 16 189543 1054.46 651 646 179.1
D 8 176 7245902 56671.16 450 430 127.9
D 1 241 474665 3709.28 450 430 127.9
D 7 70 262978 2053.54 450 430 127.9

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