ASTROSAT CZTI

Data Quality Report

Orbit 52277

Creation date: 2025-07-21T22:47:56.997911
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_011T05_9000006474_52277cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52277cztM0_level2_quad_clean.evt
Size (bytes)823,703,04069,163,200
Size785.5 MB 66.0 MB
Events in quadrant A3,557,702586,184
Events in quadrant B4,917,862608,752
Events in quadrant C13,858,2567,170
Events in quadrant D7,670,359454,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149711
B0189141
C0454661
D0272184

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62671422.265837%
B62673816.079464%
C6267621799.202170%
D6267107317.121430%

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 7297 6268 103 103 1.41% 1.64%
B 7297 6268 241 241 3.30% 3.84%
C 7296 6266 4788 4788 65.62% 76.41%
D 7297 6268 853 853 11.69% 13.61%

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 4 249 375490 2311.68 646 630 162.2
A 7 206 268776 1653.59 646 630 162.2
A 12 3 102076 625.59 646 630 162.2
B 10 254 1065274 7984.37 634 613 133.3
B 0 213 407217 3049.31 634 613 133.3
B 4 171 170421 1273.47 634 613 133.3
C 15 158 5662656 88626.97 225 223 63.9
C 15 178 4451890 69676.37 225 223 63.9
C 15 224 1389447 21743.78 225 223 63.9
D 15 93 3395310 20227.75 586 560 167.8
D 12 128 372475 2216.07 586 560 167.8
D 8 176 180192 1070.34 586 560 167.8

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