ASTROSAT CZTI

Data Quality Report

Orbit 52078

Creation date: 2025-05-15T04:42:57.426276
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_011T07_9000006470_52078cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52078cztM0_level2_quad_clean.evt
Size (bytes)1,095,857,28067,985,280
Size1.0 GB 64.8 MB
Events in quadrant A3,420,503630,904
Events in quadrant B9,374,177503,014
Events in quadrant C9,478,474456,414
Events in quadrant D17,785,1349,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148521
B0324361
C0328411
D0570605

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6570851.293760%
B6571202330.786790%
C6571215832.841272%
D6570649798.888889%

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 7490 6571 52 52 0.69% 0.79%
B 7491 6571 1709 1709 22.81% 26.01%
C 7491 6572 1998 1998 26.67% 30.40%
D 7489 6569 6456 6456 86.21% 98.28%

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 6 196 187928 1088.65 683 666 172.0
A 4 3 90507 522.29 683 666 172.0
A 8 246 69026 397.41 683 666 172.0
B 10 254 4454166 33473.81 632 610 133.0
B 10 128 1096806 8239.23 632 610 133.0
B 5 172 217678 1631.53 632 610 133.0
C 15 224 5056744 30805.97 586 581 164.1
C 15 193 514200 3129.36 586 581 164.1
C 2 239 467010 2841.84 586 581 164.1
D 15 94 14629185 290503.81 164 156 50.4
D 6 42 1449849 28788.06 164 156 50.4
D 3 12 359007 7126.08 164 156 50.4

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