ASTROSAT CZTI

Data Quality Report

Orbit 53051

Creation date: 2025-07-19T16:45:24.160733
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_9000006488_53051cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53051cztM0_level2_quad_clean.evt
Size (bytes)859,273,92068,754,240
Size819.5 MB 65.6 MB
Events in quadrant A5,791,093523,726
Events in quadrant B5,387,177528,961
Events in quadrant C12,157,785196,599
Events in quadrant D8,002,090407,393

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214411
B0202361
C0402501
D0279501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A607073912.174629%
B607099716.425041%
C6071400165.903476%
D6071156325.745347%

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 6955 6071 577 577 8.30% 9.50%
B 6955 6071 721 721 10.37% 11.88%
C 6956 6072 3785 3785 54.41% 62.34%
D 6956 6072 1508 1508 21.68% 24.84%

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 9 191 2215661 14783.13 606 592 149.8
A 3 114 513857 3425.47 606 592 149.8
A 7 206 259518 1728.04 606 592 149.8
B 1 255 1969446 15901.83 576 555 123.8
B 10 63 582005 4696.1 576 555 123.8
B 10 247 174512 1404.97 576 555 123.8
C 1 241 7521308 71852.67 378 374 104.7
C 15 158 879048 8394.58 378 374 104.7
C 15 224 776840 7418.12 378 374 104.7
D 12 17 2100446 13474.1 546 522 155.8
D 8 176 2090934 13413.06 546 522 155.8
D 2 172 1011752 6488.53 546 522 155.8

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