ASTROSAT CZTI

Data Quality Report

Orbit 33269

Creation date: 2024-06-27T20:46:51.781605
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/AS1A11_047T10_9000004778_33269cztM0_level2.evt modeM0/AS1A11_047T10_9000004778_33269cztM0_level2_quad_clean.evt
Size (bytes)512,277,12090,581,760
Size488.5 MB 86.4 MB
Events in quadrant A2,708,210603,338
Events in quadrant B4,454,094576,017
Events in quadrant C3,300,390586,749
Events in quadrant D4,655,513568,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119093
B0170092
C0133292
D0180492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5848120.205198%
B584863810.909713%
C5848591.008892%
D58481081.846785%

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 7162 5849 3 3 0.04% 0.05%
B 7162 5849 471 471 6.58% 8.05%
C 7162 5849 51 51 0.71% 0.87%
D 7162 5849 85 85 1.19% 1.45%

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 12 16 28788 205.71 682 669 136.7
A 15 169 13724 95.5 682 669 136.7
A 15 17 11253 77.43 682 669 136.7
B 5 172 1439534 11639.39 642 624 123.6
B 0 230 193687 1561.69 642 624 123.6
B 5 200 92021 739.31 642 624 123.6
C 10 49 286731 1874.38 655 660 152.6
C 15 214 263603 1722.84 655 660 152.6
C 0 10 124181 809.33 655 660 152.6
D 8 195 1189123 6980.33 655 638 170.3
D 12 218 167782 981.69 655 638 170.3
D 12 233 167266 978.66 655 638 170.3

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