ASTROSAT CZTI

Data Quality Report

Orbit 10441

Creation date: 2024-06-27T15:59:19.152247
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/AS1A03_126T01_9000001512_10441cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10441cztM0_level2_quad_clean.evt
Size (bytes)380,410,56047,871,360
Size362.8 MB 45.7 MB
Events in quadrant A2,790,391252,804
Events in quadrant B2,632,923277,423
Events in quadrant C2,494,719296,090
Events in quadrant D3,257,688268,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307189
B0309179
C0306194
D0299176

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04142830327
B03726426338
C03150120270
D03961626515

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042
B042
C042
D042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44001112.522727%
B49421012.043707%
C5393741.372149%
D5265931.766382%

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 7953 5669 4 4 0.05% 0.07%
B 7970 6049 1 1 0.01% 0.02%
C 7946 6520 2 2 0.03% 0.03%
D 7950 6152 6 6 0.08% 0.10%

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 13 251 656772 5930.11 528 514 110.7
A 3 80 74635 669.78 528 514 110.7
A 14 254 10031 86.0 528 514 110.7
B 4 239 211591 1818.25 589 574 116.1
B 0 214 34356 291.09 589 574 116.1
B 11 51 31428 265.86 589 574 116.1
C 14 234 31347 207.38 630 634 148.1
C 13 61 4697 27.43 630 634 148.1
C 14 67 2387 11.84 630 634 148.1
D 1 20 306248 2021.18 615 596 151.2
D 8 195 294427 1943.01 615 596 151.2
D 1 52 119390 785.55 615 596 151.2

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