ASTROSAT CZTI

Data Quality Report

Orbit 52567

Creation date: 2025-06-17T02:45:55.124049
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_011T06_9000006478_52567cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52567cztM0_level2_quad_clean.evt
Size (bytes)627,912,00084,677,760
Size598.8 MB 80.8 MB
Events in quadrant A3,753,627574,756
Events in quadrant B5,615,584616,696
Events in quadrant C7,897,825433,982
Events in quadrant D5,500,478509,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157081
B0210301
C0277591
D0206881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61443034.931641%
B61442193.564453%
C6145158625.809601%
D61455348.689992%

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 7194 6145 251 251 3.49% 4.08%
B 7194 6145 146 146 2.03% 2.38%
C 7194 6144 1426 1426 19.82% 23.21%
D 7195 6145 483 483 6.71% 7.86%

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 15 239 460846 2900.31 629 613 158.7
A 5 243 381156 2398.12 629 613 158.7
A 4 249 312025 1962.47 629 613 158.7
B 7 0 1663267 12366.14 630 608 134.5
B 10 254 568093 4220.71 630 608 134.5
B 10 44 255315 1894.4 630 608 134.5
C 15 248 4527629 28975.39 555 548 156.2
C 15 224 486662 3111.35 555 548 156.2
C 13 3 283280 1809.61 555 548 156.2
D 8 176 1144642 6634.57 606 580 172.4
D 12 17 278674 1612.71 606 580 172.4
D 15 125 248550 1438.01 606 580 172.4

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