ASTROSAT CZTI

Data Quality Report

Orbit 55373

Creation date: 2025-12-23T01:35:52.547414
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_009T01_9000006534_55373cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55373cztM0_level2_quad_clean.evt
Size (bytes)3,287,456,640630,642,240
Size3.1 GB 601.4 MB
Events in quadrant A40,924,5333,806,435
Events in quadrant B21,165,2794,500,417
Events in quadrant C30,387,9023,928,059
Events in quadrant D25,775,6913,803,062

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09060
B09060
C09060
D09060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015327213
B0961846
C01227326
D01084506

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44507583213.103557%
B445088561.923250%
C4450821894.918217%
D4450912912.900537%

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 50597 44508 4440 4440 8.78% 9.98%
B 50597 44512 189 189 0.37% 0.42%
C 50597 44514 1680 1680 3.32% 3.77%
D 50598 44515 969 969 1.92% 2.18%

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 4 159 14117693 12704.8 4520 4421 1110.9
A 12 115 4637915 4171.08 4520 4421 1110.9
A 0 8 2304467 2070.51 4520 4421 1110.9
B 0 199 988629 992.67 4664 4483 991.4
B 5 185 944222 947.88 4664 4483 991.4
B 10 247 290751 288.75 4664 4483 991.4
C 9 38 8966701 7263.19 4543 4500 1233.9
C 13 3 1931630 1561.79 4543 4500 1233.9
C 12 252 632123 508.64 4543 4500 1233.9
D 11 176 1701191 1316.03 4599 4396 1289.3
D 11 129 1597260 1235.42 4599 4396 1289.3
D 2 249 693796 534.7 4599 4396 1289.3

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